what is the {end time} for {Ossie Davis} has {educated at} as {Howard University} ?
When did Ossie Davis graduate from Howard University?
SELECT ?value WHERE { wd:Q515632 p:P69 ?s . ?s ps:P69 wd:Q1068752 . ?s pq:P582 ?value}
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q515632> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P69> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q1068752> .
?statement <http://www.wikidata.org/entity/P582> ?value. 
} 

On what date did Ossie Davis graduate from Howard University?