What is {position held} of {Cuauhtémoc Cárdenas Solórzano} that is {start time} is {1976-9-1} ?
In September 1976, which position was held by Cuauhtémoc Cárdenas Solórzano?
What position did Cuauhtémoc Cárdenas Solórzano hold in September 1976?
SELECT ?w WHERE { resource:Cuauhtémoc_Cárdenas_Solórzano property:position_held ?r . ?r property:position_held ?w . FILTER ( CONTAINS ( YEAR ( ?w ) , '1976' ) ) . ?r property:start_time ?w }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q922837> .
?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> <1976-9-1>
} 

SELECT ?obj WHERE { wd:Q922837 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1976')) }