What is {position held} of {Sergey Bubka} that is {start time} is {2002-5-14} ?
What position did Sergey Bubka hold since May 14th, 2002?
What position did Sergey Bubka begin on May 14th, 2002?
SELECT ?h WHERE { resource:Sergei_Bubka property:position_held ?l . ?l property:position_held ?h . ?l property:start_time ?t . FILTER ( CONTAINS ( YEAR ( ?t ) , '2002' ) ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q184556> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P39> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <2002-5-14>
} 

SELECT ?obj WHERE { wd:Q184556 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'2002')) }