What is {date of commencement} of {book publisher} of {Astronomy and Astrophysics} ?
At the point when is the date of beginning of the book distribute for Astronomy and Astrophysics
When is the date of commencement of the book publish for Astronomy and Astrophysics
SELECT ?h WHERE { resource:Astronomy_and_Astrophysics property:publisher ?a . ?a property:inception ?h }
SELECT ?answer WHERE { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q752075> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P123>. ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?X . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?X. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P571> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer . }
SELECT ?answer WHERE { wd:Q752075 wdt:P123 ?X . ?X wdt:P571 ?answer}
1920-01-01T00:00:00Z