What is {position held} of {Adolfo Suárez} that is {end time} is {1973-0-0} ?
What job did Adolfo Suarez have until 1973?
What position did Adolfo Suárez hold until 1973?
SELECT ?r WHERE { ?i property:position_held ?r . resource:Adolfo_Suárez property:position_held ?i . ?i property:end_time ?k . FILTER ( CONTAINS ( YEAR ( ?k ) , '1973' ) ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q214367> .
?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/P582> <1973-0-0>
} 

SELECT ?obj WHERE { wd:Q214367 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'1973')) }