What is the {greenhouse gas} with the {MIN(sublimation temperature)} whose {has effect} is {carbon dioxide exposure}  ?
What greenhouse gas has the lowest temperatures which has an effect on carbon dioxide exposure?
What is the greenhouse gas with the lowest sublimation temperature whose has effect is carbon dioxide exposure?
SELECT ?z WHERE { ?z property:has_effect resource:carbon_dioxide_exposure . . ?z rdf:type ontology:greenhouse_gas . ?z property:sublimation_temperature ?y }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q167336>.

?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/P2113>.
?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/P1542> .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q21173362> .

}
ORDER BY ASC(?obj1)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q167336 . ?ent wdt:P2113 ?obj . ?ent wdt:P1542 wd:Q21173362. } ORDER BY ASC(?obj)LIMIT 5 