What is the {impact crater} with the {MIN(diameter)} whose {instance of} is {Mars crater}  ?
Name the smallest - diameter impact crater on Mars.
Name the impact crater on Mars with the smallest diameter.
SELECT ?s WHERE { ?s rdf:type ontology:Mars_crater . ?s rdf:type ontology:impact_crater . ?s property:diameter ?c }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q55818>.

?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/P2386>.
?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/Q1475691> .

}
ORDER BY ASC(?obj1)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q55818 . ?ent wdt:P2386 ?obj . ?ent wdt:P31 wd:Q1475691} ORDER BY ASC(?obj)LIMIT 5 
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