what is the {start time} for {Henry Steele Commager} has {educated at} as {University of Chicago} ?
Henry Steele Commager went to the University of Chicago when?
When did Henry Steele Commager receive his education from the University of Chicago ?
SELECT ?r WHERE { ?g property:start_time ?r . resource:Henry_Steele_Commager property:educated_at ?g . ?g property:educated_at resource:University_of_Chicago }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q3785004> .
?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/Q131252> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q3785004 p:P69 ?s . ?s ps:P69 wd:Q131252 . ?s pq:P580 ?value}