- Write a variation of the map/1 predicate that takes two dates, and that shows on a map all piracy events that happened in the time-interval between those two dates. You will have to use the predicate parse_time/3 convert between dates and the internal representation of timestamps as a number. Example: http://localhost:3020/map?start=2008-01-01&end=2008-12-31 (showing all piracy events in the year 2008)
- Write a variation of the map/1 predicate that takes a type of ship
and shows on a map all piracy events with that type of ship involved.
Example: http://localhost:3020/map?type=atype_passenger_vessel Make
sure that you take the hierarchy of ship-types into account when
calculating your answer. Of course you can use the code you wrote for
exercise 2 of Pack your queries in Prolog
You can use the predicate rdf_global_id/2 to translate
atype_passenger_vesselinto a proper resource.