What is the {group of chemical substances} with the {MIN(ultimate tensile strength)} whose {topic's main category} is {Category:Nylon}  ?
What kind of the chemical substances of nylon have the lowest ultimate tensile strength?
What is the group of chemical substances with the lowest ultimate tensile strength whose topic's main category is Category:Nylon ?
SELECT ?m WHERE { ?m property:ultimate_tensile_strength ?h . ?m rdf:type ontology:group_or_class_of_chemical_substances . ?m property:topic's_main_category resource:Category:Nylon }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q17339814>.

?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/P5479>.
?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/P910> .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q55272807> .

}
ORDER BY ASC(?obj1)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q17339814 . ?ent wdt:P5479 ?obj . ?ent wdt:P910 wd:Q55272807} ORDER BY ASC(?obj)LIMIT 5 
nylon