Question: What is the class IB flammable liquid with min boiling point whose instance is ester?
Paraphrase: With an instance of ester, and a minimum boiling point, which class IB liquid is also flammable?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q21009055 . ?ent wdt:P2102 ?obj . ?ent wdt:P31 wd:Q101487. } ORDER BY ASC(?obj)LIMIT 5 
Answer: ethyl formate, ethyl formate, ethyl acetate, ethyl formate, methyl acetate