What is {spouse} of {Giuseppe Garibaldi} that is {start time} is {1880-1-26} ?
Giuseppe Garibaldi's wife in 1/26/1880?
Who was the wife of Giuseppe Garibaldi in 1/26/1880?
SELECT ?g WHERE { ?b property:start_time ?u . resource:Giuseppe_Garibaldi property:spouse ?b . ?b property:spouse ?g . FILTER ( CONTAINS ( YEAR ( ?u ) , '1880' ) ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q539> .
?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> <1880-1-26>
} 

SELECT ?obj WHERE { wd:Q539 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1880')) }