Question: Which Class IB flammable liquid has maximum partition coefficient water/octanol?
Paraphrase: Which flammable liquid of Class IB has the maximum water / octanol partition coefficient?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q21009055 . ?ent wdt:P2993 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: (1E)-1,2-dichloroethylene, (1Z)-1,2-dichloroethylene, ethyl acetate, allyl alcohol