which conference series focuses on capricon?
Entity Entity
m.081qw m.0bh901
Worldcon Canvention
class class class entity
conferences.conference_series conferences.conference conferences.conference_subject m.03c9x4m
conferences.conference_series conferences.conference conferences.conference_subject conferences.conference_series
Conference series Conference event Conference subject Capricon
none none none none
conferences.conference_series.conference conferences.conference.focus conferences.conference_series.subject
Conferences Focus Subject
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 . 
?x2 :type.object.type :conferences.conference_subject . 
VALUES ?x3 { :m.03c9x4m } 
?x0 :conferences.conference_series.conference ?x1 . 
?x1 :conferences.conference.focus ?x2 . 
?x3 :conferences.conference_series.subject ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x0 != ?x3 && ?x1 != ?x2 && ?x1 != ?x3 && ?x2 != ?x3  )
}
}
(AND conferences.conference_series (JOIN conferences.conference_series.conference (JOIN conferences.conference.focus (JOIN (R conferences.conference_series.subject) m.03c9x4m))))