What is {informed by} of {main topic} of {Einstein–Rosen metric} ?
what are the main ideas presented by  the Einstein-Rosen metric?
What is the main topic of the Einstein-Rosen metric about?
SELECT ?d WHERE { resource:Einstein–Rosen_metric property:facet_of ?e . ?e property:influenced_by ?d }
SELECT ?answer WHERE { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q5349813> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1269>. ?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/P737> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer . }
SELECT ?answer WHERE { wd:Q5349813 wdt:P1269 ?X . ?X wdt:P737 ?answer}