What is {measured by} of {has outcome} of {energy transformer} ?
How is the yield of an vitality transformer measured?
How is the output of an energy transformer measured?
SELECT ?q WHERE { ?z property:measurement_scale ?q . resource:energy_transformer property:has_effect ?z }
SELECT ?answer WHERE { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q40643813> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1542>. ?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/P1880> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer . }
SELECT ?answer WHERE { wd:Q40643813 wdt:P1542 ?X . ?X wdt:P1880 ?answer}
energy efficiency