What is the {occupational carcinogen} with the {MAX(decomposition point)} whose {has part} is {hydrogen}  ?
Which hydrogen - containing occupational carcinogen has the highest point of decomposition?
What occupational carcinogen containing hydrogen has the highest decomposition point ?
SELECT ?n WHERE { ?n property:has_part resource:hydrogen . ?n rdf:type ontology:occupational_carcinogen . ?n property:decomposition_point ?h }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q21074597>.

?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/P2107>.
?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/P527> .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q556> .

}
ORDER BY DESC(?obj1)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q21074597 . ?ent wdt:P2107 ?obj . ?ent wdt:P527 wd:Q556 } ORDER BY DESC(?obj)LIMIT 5 
chromic acid phenylhydrazine chromic acid dimethyl sulfate