what is the {instance of} for {Henry VII, Holy Roman Emperor} has {date of birth} as {1275-1-1} ?
Was Henry Viii, the holy Roman Emperor, born on January 1, 1275?
Is the date of birth of Henry Viii, the holy Roman Emperor, 1275-1-1?
SELECT ?q WHERE { FILTER ( CONTAINS ( YEAR ( ?f ) , '1275' ) ) . ?g rdf:type ?q . ?g property:date_of_birth ?f . resource:Henry_VII,_Holy_Roman_Emperor property:date_of_birth ?g }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q152717> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P569> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <1275-1-1> .
?statement <http://www.wikidata.org/entity/P31> ?value. 
} 

SELECT ?value WHERE { wd:Q152717 p:P569 ?s . ?s ps:P569 ?x filter(contains(YEAR(?x),'1275')) . ?s pq:P31 ?value}