What is the {motor yacht} with the {MAX(gross tonnage)} whose {instance of} is {motor yacht}  ?
What is the motor yacht with the highest gross tonnage whose instance of is motor yacht ?
select ?ent where { ?ent wdt:P31 wd:Q21505397 . ?ent wdt:P1093 ?obj . ?ent wdt:P31 wd:Q21505397 } ORDER BY DESC(?obj)LIMIT 5 
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q21505397>.

?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/P1093>.
?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/P31> .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q21505397> .

}
ORDER BY DESC(?obj1)
LIMIT 5
What yacht motor is the heaviest?