What is the {aircraft family} with the {MAX(wing area)} whose {use} is {Gliding competition}  ?
Which aircraft can be used in a gliding competition with the largest wing span?
Which aircraft has the largest wingspan that can be used in a gliding competition?
SELECT ?z WHERE { ?z property:wing_area ?v . ?z rdf:type ontology:aircraft_family . ?z property:use resource:Gliding_competition }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q15056993>.

?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/P2112>.
?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/P366> .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q5569597> .

}
ORDER BY DESC(?obj1)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q15056993 . ?ent wdt:P2112 ?obj . ?ent wdt:P366 wd:Q5569597 } ORDER BY DESC(?obj)LIMIT 5 
Nimbus-4 Schempp-Hirth Arcus Lange Antares Rolladen-Schneider LS6 Rolladen-Schneider LS8