Question: Who is the inventor of the power station whose output is measured by the kilowatt hour?
Paraphrase: Who is the innovator of the control station whose yield is measured by the kilowatt hour?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q159719 wdt:P1056 ?answer . ?answer wdt:P1880 wd:Q182098}
Answer: electrical energy