What is {spouse} of {Osip Mandelstam} that is {start time} is {1922-0-0} ?
To whom was Osip Mandelstam hitched within the year 1922?
To whom was Osip Mandelstam married in the year 1922?
SELECT ?d WHERE { ?i property:start_time ?y . resource:Osip_Mandelstam property:spouse ?i . FILTER ( CONTAINS ( YEAR ( ?y ) , '1922' ) ) . ?i property:spouse ?d }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q189950> .
?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> <1922-0-0>
} 

SELECT ?obj WHERE { wd:Q189950 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1922')) }