What is the {Class IB flammable liquid} with the {MAX(surface tension)} whose {instance of} is {chemical compound}  ?
What is the group IB flame - retardant liquid with min surface tension whose chemical compound instance?
What is the group IB flammable liquid with min surface tension whose instance of chemical compound?
SELECT ?p WHERE { ?p rdf:type ontology:Class_IB_flammable_liquid . ?p property:surface_tension ?f . ?p rdf:type ontology:chemical_compound }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q21009055>.

?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?ent .
?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P3013>.
?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj1.

?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?ent .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P31> .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q11173> .

}
ORDER BY DESC(?obj1)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q21009055 . ?ent wdt:P3013 ?obj . ?ent wdt:P31 wd:Q11173 } ORDER BY DESC(?obj)LIMIT 5 
allyl alcohol allyl alcohol ethyl acetate ethyl acetate allyl alcohol