What is the {oxide} with the {MAX(thermal conductivity)} whose {has quality} is {turbidity}  ?
Which turbid oxide is the most effective conductor of heat?
What is the name of the turbid oxide with the greatest thermal conductivity?
SELECT ?x WHERE { ?x property:thermal_conductivity ?d . ?x rdf:type ontology:oxide . ?x property:has_quality resource:turbidity }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q50690>.

?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/P2068>.
?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/P1552> .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q898574> .

}
ORDER BY DESC(?obj1)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q50690 . ?ent wdt:P2068 ?obj . ?ent wdt:P1552 wd:Q898574 } ORDER BY DESC(?obj)LIMIT 5 