What is the {Class IB flammable liquid} with the {MAX(density)} ?
Which flammable liquid is considered Class IB and also has the highest density?
Name the Class IB flammable liquid with highest density?
SELECT ?l WHERE { ?l rdf:type ontology:Class_IB_flammable_liquid . ?l property:density ?x }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q21009055>.
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?ent .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2054>.
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .}
ORDER BY DESC(?obj)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q21009055 . ?ent wdt:P2054 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Ethanol acrolein iron pentacarbonyl iron pentacarbonyl bromoethane