what is the {criterion used} for {September} has {series ordinal} as {9} ?
The criteria used for the 9th of September is what?
What criteria was used for the 9th of September?
SELECT ?u WHERE { FILTER ( ?j = 9 ) . ?q property:criterion_used ?u . resource:September property:series_ordinal ?q . ?q property:series_ordinal ?j }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q123> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1545> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <9> .
?statement <http://www.wikidata.org/entity/P1013> ?value. 
} 

SELECT ?value WHERE { wd:Q123 p:P1545 ?s . ?s ps:P1545 ?x filter(contains(?x , '9')) . ?s pq:P1013 ?value}