portland convention center shares a conference series with what conference event?
Entity
m.03_777
O'Reilly Open Source Convention
class class entity
conferences.conference_series conferences.conference m.07sts4
conferences.conference_series conferences.conference conferences.conference_venue
Conference series Conference event portland convention center
none none none
conferences.conference_series.conference conferences.conference_venue.conferences
Conferences Conferences
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX : <http://rdf.freebase.com/ns/> 
SELECT (?x0 AS ?value) WHERE {
SELECT DISTINCT ?x0  WHERE { 
?x0 :type.object.type :conferences.conference_series . 
?x1 :type.object.type :conferences.conference . 
VALUES ?x2 { :m.07sts4 } 
?x0 :conferences.conference_series.conference ?x1 . 
?x2 :conferences.conference_venue.conferences ?x1 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND conferences.conference_series (JOIN conferences.conference_series.conference (JOIN (R conferences.conference_venue.conferences) m.07sts4)))