What is {rector} of {Charles University in Prague} that is {end time} is {1990-0-0} ?
What was the name of the rector of Charles University in Prague whose administration ended in 1990?
Who was the rector of Charles University in Prague whose administration ended in 1990?
SELECT ?y WHERE { ?n property:end_time ?y . FILTER ( CONTAINS ( YEAR ( ?y ) , '1990' ) ) . ?n property:rector ?y . resource:Charles_University property:rector ?n }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q31519> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1075> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P582> <1990-0-0>
} 

SELECT ?obj WHERE { wd:Q31519 p:P1075 ?s . ?s ps:P1075 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'1990')) }