What is {country of origin} of {Boney M.} that is {start time} is {1975-0-0} ?
What is the birthplace of Boney M. in 1975?
Where was Boney M. born in 1975?
SELECT ?a WHERE { resource:Boney_M. property:country_of_origin ?w . ?w property:country_of_origin ?a . ?w property:start_time ?e . FILTER ( CONTAINS ( YEAR ( ?e ) , '1975' ) ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q156298> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P495> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1975-0-0>
} 

SELECT ?obj WHERE { wd:Q156298 p:P495 ?s . ?s ps:P495 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1975')) }