Question: When is the birthday of  Walther von der Vogelweide for instance 1170-1-1 ?
Paraphrase: Is 1170-1-1 the day of celebration for Walther Von der Vogelweide 's birth?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q44385 p:P569 ?s . ?s ps:P569 ?x filter(contains(YEAR(?x),'1170')) . ?s pq:P31 ?value}