What is {chairperson} of {Mossad} that is {start time} is {2002-0-0} ?
Who became the chairperson of Mossad in 2002?
Who was the chairperson of Mossad that started in 2002?
SELECT ?m WHERE { ?e property:start_time ?u . ?e property:chairperson ?m . resource:Mossad property:chairperson ?e . FILTER ( CONTAINS ( YEAR ( ?u ) , '2002' ) ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q34216> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P488> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <2002-0-0>
} 

SELECT ?obj WHERE { wd:Q34216 p:P488 ?s . ?s ps:P488 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'2002')) }