What is the {chemical element} with the {MAX(electronegativity)} whose {subject has role} is {Trace Elements}  ?
What is the chemical element with the greatest electronegativity whose subject role is a trace element?
select ?ent where { ?ent wdt:P31 wd:Q11344 . ?ent wdt:P1108 ?obj . ?ent wdt:P2868 wd:Q50430179 } ORDER BY DESC(?obj)LIMIT 5 
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q11344>.

?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/P1108>.
?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/P2868> .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q50430179> .

}
ORDER BY DESC(?obj1)
LIMIT 5
What chemical element with the subject role of a trace element has the greatest electronegativity?