What is the {weapon model} with the {MAX(pressure)} whose {subclass of} is {76 mm gun}  ?
What guns are classified as 76 mm?
select ?ent where { ?ent wdt:P31 wd:Q15142894 . ?ent wdt:P2077 ?obj . ?ent wdt:P279 wd:Q47518821 } ORDER BY DESC(?obj)LIMIT 5 
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q15142894>.

?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/P2077>.
?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/P279> .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q47518821> .

}
ORDER BY DESC(?obj1)
LIMIT 5
Which guns are 76 mm?