What is {spouse} of {Dorothea Lange} that is {start time} is {1920-1-1} ?
Who was Dorethea Lange married to in 1920?
what was the name of Dorethea Lange's spouse in the year 1920?
SELECT ?j WHERE { resource:Dorothea_Lange property:spouse ?p . ?p property:start_time ?a . ?p property:spouse ?j . FILTER ( CONTAINS ( YEAR ( ?a ) , '1920' ) ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q230673> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P26> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1920-1-1>
} 

SELECT ?obj WHERE { wd:Q230673 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1920')) }