What is the {service on internet} with the {MIN(port)} whose {instance of} is {service on internet}  ?
Whose instance of is the lowest port and is the service on internet?
What is the service on internet with the lowest port whose instance of is service on internet?
SELECT ?w WHERE { ?w rdf:type ontology:service_on_internet . . ?w rdf:type ontology:service_on_internet . ?w property:port ?i }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q1668024>.

?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/P1641>.
?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/Q1668024> .

}
ORDER BY ASC(?obj1)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q1668024 . ?ent wdt:P1641 ?obj . ?ent wdt:P31 wd:Q1668024. } ORDER BY ASC(?obj)LIMIT 5 
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