what is the {instance of} for {Walther von der Vogelweide} has {date of birth} as {1170-1-1} ?
When is the birthday of  Walther von der Vogelweide for instance 1170-1-1 ?
SELECT ?value WHERE { wd:Q44385 p:P569 ?s . ?s ps:P569 ?x filter(contains(YEAR(?x),'1170')) . ?s pq:P31 ?value}
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q44385> .
?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> <1170-1-1> .
?statement <http://www.wikidata.org/entity/P31> ?value. 
} 

Is 1170-1-1 the day of celebration for Walther Von der Vogelweide 's birth?