void/commit

added schema

authorJacco van Ossenbruggen
Fri Jun 17 10:18:06 2011 +0200
committerJacco van Ossenbruggen
Fri Jun 17 10:18:06 2011 +0200
commit14ce97b55ee8dbdb9534d69e7c5c33b9aae00bf3
tree95a77fea840ae99ae635fd648bbdef3f41bc109d
parent2d80a7d555ff2c28ff27e06a2dc9163ada57dcf5
Diff style: patch stat
diff --git a/rdf/base/Manifest.ttl b/rdf/base/Manifest.ttl
new file mode 100644
index 0000000..f20afaa
--- /dev/null
+++ b/rdf/base/Manifest.ttl
@@ -0,0 +1,13 @@
+@prefix	    lib: <http://www.swi-prolog.org/rdf/library/> .
+@prefix     owl: <http://www.w3.org/2002/07/owl#> .
+@prefix     rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix    rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix	dcterms: <http://purl.org/dc/terms/> .
+@prefix	   void: <http://rdfs.org/ns/void#> .
+
+<void>
+	a lib:Schema ;
+	a lib:Virtual ;
+	dcterms:title "Vocabulary of Interlinked Datasets (VoID)" ;
+	lib:source <http://rdfs.org/ns/void.rdf>
+	owl:imports <void-20110616.rdf> .
diff --git a/rdf/base/void-20110616.rdf b/rdf/base/void-20110616.rdf
new file mode 100644
index 0000000..f6a4d72
--- /dev/null
+++ b/rdf/base/void-20110616.rdf
@@ -0,0 +1,324 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+  xmlns:owl="http://www.w3.org/2002/07/owl#"
+  xmlns:dc="http://purl.org/dc/elements/1.1/"
+  xmlns:vann="http://purl.org/vocab/vann/"
+  xmlns:foaf="http://xmlns.com/foaf/0.1/"
+  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
+
+  <owl:Ontology rdf:about="http://vocab.deri.ie/void">
+    <dc:title>Vocabulary of Interlinked Datasets (VoID)</dc:title>
+    <dc:description>The Vocabulary of Interlinked Datasets (VoID) is an RDF Schema vocabulary for expressing metadata about RDF datasets. It is intended as a bridge between the publishers and users of RDF data, with applications ranging from data discovery to cataloging and archiving of datasets. This document provides a formal definition of the new RDF classes and properties introduced for VoID. It is a companion to the main specification document for VoID, &lt;em&gt;&lt;a href=&quot;http://www.w3.org/TR/void/&quot;&gt;Describing Linked Datasets with the VoID Vocabulary&lt;/a&gt;&lt;/em&gt;.</dc:description>
+    <dc:modified rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2011-06-17</dc:modified>
+    <vann:preferredNamespaceUri>http://rdfs.org/ns/void#</vann:preferredNamespaceUri>
+    <vann:preferredNamespacePrefix>void</vann:preferredNamespacePrefix>
+    <foaf:page rdf:resource="http://vocab.deri.ie/void.html"/>
+    <dc:creator rdf:resource="http://vocab.deri.ie/void#cygri"/>
+    <dc:creator rdf:resource="http://vocab.deri.ie/void#junzha"/>
+    <dc:creator rdf:resource="http://vocab.deri.ie/void#keiale"/>
+    <dc:creator rdf:resource="http://vocab.deri.ie/void#Michael%20Hausenblas"/>
+  </owl:Ontology>
+
+  <foaf:Person rdf:about="http://vocab.deri.ie/void#cygri">
+    <foaf:name>Richard Cyganiak</foaf:name>
+    <foaf:homepage rdf:resource="http://richard.cyganiak.de/"/>
+    <foaf:mbox rdf:resource="mailto:richard.cyganiak@deri.org"/>
+  </foaf:Person>
+
+  <foaf:Organization rdf:about="http://vocab.deri.ie/void#Digital%20Enterprise%20Research%20Institute%2C%20NUI%20Galway">
+    <foaf:member rdf:resource="http://vocab.deri.ie/void#cygri"/>
+    <foaf:name>Digital Enterprise Research Institute, NUI Galway</foaf:name>
+    <foaf:homepage rdf:resource="http://www.deri.ie/"/>
+  </foaf:Organization>
+
+  <foaf:Person rdf:about="http://vocab.deri.ie/void#junzha">
+    <foaf:name>Jun Zhao</foaf:name>
+    <foaf:homepage rdf:resource="http://users.ox.ac.uk/~zool0770/"/>
+    <foaf:mbox rdf:resource="mailto:jun.zhao@zoo.ox.ac.uk"/>
+  </foaf:Person>
+
+  <foaf:Organization rdf:about="http://vocab.deri.ie/void#Department%20of%20Zoology%2C%20University%20of%20Oxford">
+    <foaf:member rdf:resource="http://vocab.deri.ie/void#junzha"/>
+    <foaf:name>Department of Zoology, University of Oxford</foaf:name>
+    <foaf:homepage rdf:resource="http://www.zoo.ox.ac.uk/"/>
+  </foaf:Organization>
+
+  <foaf:Person rdf:about="http://vocab.deri.ie/void#keiale">
+    <foaf:name>Keith Alexander</foaf:name>
+    <foaf:homepage rdf:resource="http://kwijibo.talis.com/"/>
+    <foaf:mbox rdf:resource="mailto:Keith.Alexander@talis.com"/>
+  </foaf:Person>
+
+  <foaf:Organization rdf:about="http://vocab.deri.ie/void#Talis">
+    <foaf:member rdf:resource="http://vocab.deri.ie/void#keiale"/>
+    <foaf:name>Talis</foaf:name>
+    <foaf:homepage rdf:resource="http://www.talis.com/"/>
+  </foaf:Organization>
+
+  <foaf:Person rdf:about="http://vocab.deri.ie/void#Michael%20Hausenblas">
+    <foaf:name>Michael Hausenblas</foaf:name>
+    <foaf:homepage rdf:resource="http://sw-app.org/about.html"/>
+    <foaf:mbox rdf:resource="mailto:michael.hausenblas@deri.org"/>
+  </foaf:Person>
+
+  <foaf:Organization rdf:about="http://vocab.deri.ie/void#LiDRC">
+    <foaf:member rdf:resource="http://vocab.deri.ie/void#Michael%20Hausenblas"/>
+    <foaf:name>LiDRC</foaf:name>
+    <foaf:homepage rdf:resource="http://linkeddata.deri.ie/"/>
+  </foaf:Organization>
+
+  <rdfs:Class rdf:about="http://rdfs.org/ns/void#Dataset">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>dataset</rdfs:label>
+    <rdfs:comment>A set of RDF triples that are published, maintained or aggregated by a single provider.</rdfs:comment>
+    <rdfs:subClassOf rdf:resource="http://purl.org/dc/dcmitype/Dataset"/>
+  </rdfs:Class>
+
+  <rdfs:Class rdf:about="http://rdfs.org/ns/void#Linkset">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>linkset</rdfs:label>
+    <rdfs:comment>A collection of RDF links between two void:Datasets.</rdfs:comment>
+    <rdfs:subClassOf rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+  </rdfs:Class>
+
+  <rdfs:Class rdf:about="http://rdfs.org/ns/void#TechnicalFeature">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>technical feature</rdfs:label>
+    <rdfs:comment>A technical feature of a void:Dataset, such as a supported RDF serialization format.</rdfs:comment>
+  </rdfs:Class>
+
+  <rdfs:Class rdf:about="http://rdfs.org/ns/void#DatasetDescription">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>dataset description</rdfs:label>
+    <rdfs:comment>A web resource whose foaf:primaryTopic or foaf:topics include void:Datasets.</rdfs:comment>
+    <rdfs:subClassOf rdf:resource="http://xmlns.com/foaf/0.1/Document"/>
+  </rdfs:Class>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#feature">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>feature</rdfs:label>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://rdfs.org/ns/void#TechnicalFeature"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#subset">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>has subset</rdfs:label>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#target">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>Target</rdfs:label>
+    <rdfs:comment>One of the two datasets linked by the Linkset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Linkset"/>
+    <rdfs:range rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#sparqlEndpoint">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>has a SPARQL endpoint at</rdfs:label>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#linkPredicate">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>a link predicate</rdfs:label>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Linkset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#exampleResource">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>example resource of dataset</rdfs:label>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#vocabulary">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>vocabulary</rdfs:label>
+    <rdfs:comment>A vocabulary that is used in the dataset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#subjectsTarget">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#FunctionalProperty"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>Subjects Target</rdfs:label>
+    <rdfs:comment>The dataset describing the subjects of triples contained in the Linkset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Linkset"/>
+    <rdfs:range rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:subPropertyOf rdf:resource="http://rdfs.org/ns/void#target"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#objectsTarget">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#FunctionalProperty"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>Objects Target</rdfs:label>
+    <rdfs:comment>The dataset describing the objects of the triples contained in the Linkset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Linkset"/>
+    <rdfs:range rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:subPropertyOf rdf:resource="http://rdfs.org/ns/void#target"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#dataDump">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>Data Dump</rdfs:label>
+    <rdfs:comment>An RDF dump, partial or complete, of a void:Dataset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#uriLookupEndpoint">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>has an URI look-up endpoint at</rdfs:label>
+    <rdfs:comment>Defines a simple URI look-up protocol for accessing a dataset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#uriRegexPattern">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>has URI regular expression pattern</rdfs:label>
+    <rdfs:comment>Defines a regular expression pattern matching URIs in the dataset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#class">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#FunctionalProperty"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>class</rdfs:label>
+    <rdfs:comment>The rdfs:Class that is the rdf:type of all entities in a class-based partition.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#classes">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#DatatypeProperty"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>classes</rdfs:label>
+    <rdfs:comment>The total number of distinct classes in a void:Dataset. In other words, the number of distinct resources occuring as objects of rdf:type triples in the dataset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#integer"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#classPartition">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>class partition</rdfs:label>
+    <rdfs:comment>A subset of a void:Dataset that contains only the entities of a certain rdfs:Class.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:subPropertyOf rdf:resource="http://rdfs.org/ns/void#subset"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#distinctObjects">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#DatatypeProperty"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>distinct objects</rdfs:label>
+    <rdfs:comment>The total number of distinct objects in a void:Dataset. In other words, the number of distinct resources that occur in the object position of triples in the dataset. Literals are included in this count.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#integer"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#distinctSubjects">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#DatatypeProperty"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>distinct subjects</rdfs:label>
+    <rdfs:comment>The total number of distinct subjects in a void:Dataset. In other words, the number of distinct resources that occur in the subject position of triples in the dataset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#integer"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#documents">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#DatatypeProperty"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>number of documents</rdfs:label>
+    <rdfs:comment>The total number of documents, for datasets that are published as a set of individual documents, such as RDF/XML documents or RDFa-annotated web pages. Non-RDF documents, such as web pages in HTML or images, are usually not included in this count. This property is intended for datasets where the total number of triples or entities is hard to determine. void:triples or void:entities should be preferred where practical.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#integer"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#entities">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#DatatypeProperty"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>number of entities</rdfs:label>
+    <rdfs:comment>The total number of entities that are described in a void:Dataset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#integer"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#inDataset">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>in dataset</rdfs:label>
+    <rdfs:comment>Points to the void:Dataset that a document is a part of.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://xmlns.com/foaf/0.1/Document"/>
+    <rdfs:range rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:subPropertyOf rdf:resource="http://purl.org/dc/terms/isPartOf"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#openSearchDescription">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>open search description</rdfs:label>
+    <rdfs:comment>An OpenSearch description document for a free-text search service over a void:Dataset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://xmlns.com/foaf/0.1/Document"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#properties">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#DatatypeProperty"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>number of properties</rdfs:label>
+    <rdfs:comment>The total number of distinct properties in a void:Dataset. In other words, the number of distinct resources that occur in the predicate position of triples in the dataset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#integer"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#property">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#FunctionalProperty"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>property</rdfs:label>
+    <rdfs:comment>The rdf:Property that is the predicate of all triples in a property-based partition.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#propertyPartition">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>property partition</rdfs:label>
+    <rdfs:comment>A subset of a void:Dataset that contains only the triples of a certain rdf:Property.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:subPropertyOf rdf:resource="http://rdfs.org/ns/void#subset"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#rootResource">
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>root resource</rdfs:label>
+    <rdfs:comment>A top concept or entry point for a void:Dataset that is structured in a tree-like fashion. All resources in a dataset can be reached by following links from its root resources in a small number of steps.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#triples">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#DatatypeProperty"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>number of triples</rdfs:label>
+    <rdfs:comment>The total number of triples contained in a void:Dataset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#integer"/>
+  </rdf:Property>
+
+  <rdf:Property rdf:about="http://rdfs.org/ns/void#uriSpace">
+    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#DatatypeProperty"/>
+    <rdfs:isDefinedBy rdf:resource="http://vocab.deri.ie/void"/>
+    <rdfs:label>URI space</rdfs:label>
+    <rdfs:comment>A URI that is a common string prefix of all the entity URIs in a void:Dataset.</rdfs:comment>
+    <rdfs:domain rdf:resource="http://rdfs.org/ns/void#Dataset"/>
+    <rdfs:range rdf:resource="http://www.w3.org/2000/01/rdf-schema#Literal"/>
+  </rdf:Property>
+
+</rdf:RDF>
\ No newline at end of file