Question: What is the Class IIIA combustible liquid with the lowest density whose instance of is occupational carcinogen?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q21009058 . ?ent wdt:P2054 ?obj . ?ent wdt:P31 wd:Q21074597} ORDER BY ASC(?obj)LIMIT 5