Question: How much melting point that Class IIIA combustible liquid have?
Paraphrase: What is the melting point of Class IIIA combustible liquid?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q21009058 . ?ent wdt:P2101 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: para-cresol, orthocresol, cyclohexanol, phenylhydrazine, methacrylic acid