What is {position held} of {Ralf Dahrendorf} that is {start time} is {1993-7-15} ?
During 1993-7-15, Ralf Dahrendorf held what position?
What position did Ralf Dahrendorf hold during 1993-7-15?
SELECT ?u WHERE { ?l property:position_held ?u . ?l property:start_time ?z . resource:Ralf_Dahrendorf property:position_held ?l . FILTER ( CONTAINS ( YEAR ( ?z ) , '1993' ) ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q76959> .
?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> <1993-7-15>
} 

SELECT ?obj WHERE { wd:Q76959 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1993')) }