What is {rector} of {Pompeu Fabra University} that is {start time} is {1990-6-18} ?
What was the name of Pompeu Fabra University's Dean on June 18, 1990?
Who was the Dean of Pompeu Fabra University as of June 18, 1990?
SELECT ?u WHERE { resource:Pompeu_Fabra_University property:rector ?w . ?w property:rector ?u . FILTER ( CONTAINS ( YEAR ( ?u ) , '1990' ) ) . ?w property:start_time ?u }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q24543> .
?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/P580> <1990-6-18>
} 

SELECT ?obj WHERE { wd:Q24543 p:P1075 ?s . ?s ps:P1075 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1990')) }