Question: What are the physical quantity that measured by watt per meter kelvin and which that starts with the letter c
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q107715 . ?sbj wdt:P1880 wd:Q1463969 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'c')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25