What is the {measured physical quantity} and the {based on} of {Watt} ?
What physical quantity is the Watt based on?
What is Watt based on the way to measure the physical quantity?
SELECT ?u ?o WHERE { resource:watt property:measured_physical_quantity ?u . resource:watt property:based_on ?o }
 SELECT ?ans_1 ?ans_2 WHERE { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q25236> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P111> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?ans_1. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q25236> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P144> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?ans_2. } 
SELECT ?ans_1 ?ans_2 WHERE { wd:Q25236 wdt:P111 ?ans_1 . wd:Q25236 wdt:P144 ?ans_2 }
power second radiant flux second power joule radiant flux joule