cover artist ruth vollmer was on what magazine issue?
Entity
m.0d1k9h
Betty Parsons
class entity
book.magazine_issue m.0cm8fpj
book.magazine_issue book.illustrator
Magazine Issue Ruth Vollmer
none none
book.magazine_issue.cover_artist
Cover artist
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 :book.magazine_issue . 
VALUES ?x1 { :m.0cm8fpj } 
?x0 :book.magazine_issue.cover_artist ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND book.magazine_issue (JOIN book.magazine_issue.cover_artist m.0cm8fpj))