what is the {point in time} for {Anna Wintour} has {significant event} as {childbirth} ?
What was a big event that occurred when Anna Wintour was experiencing childbirth?
What significant event happened when Anna Wintour was experiencing childbirth?
SELECT ?o WHERE { ?r property:point_in_time ?o . ?r property:significant_event resource:childbirth . resource:Anna_Wintour property:significant_event ?r }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q230744> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P793> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q34581> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q230744 p:P793 ?s . ?s ps:P793 wd:Q34581 . ?s pq:P585 ?value}