What is the {file system} with the {MIN(cardinality of the group)} whose {developer} is {Theodore Ts'o}  ?
Developed by Theodore Ts'o with the least cardinality, is what file system?
Name the file system developed by Theodore Ts'o with the least cardinality ?
SELECT ?u WHERE { ?u rdf:type ontology:file_system . ?u property:group_cardinality ?b . ?u property:developer resource:Theodore_Ts'o . }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q174989>.

?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/P1164>.
?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/P178> .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q92930> .

}
ORDER BY ASC(?obj1)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q174989 . ?ent wdt:P1164 ?obj . ?ent wdt:P178 wd:Q92930. } ORDER BY ASC(?obj)LIMIT 5 