which librettist collaborated with francis de croisset?
Entity Entity
m.0gc3p4 m.026dfsn
Robert de Flers Henri Caïn
class class entity
opera.librettist opera.opera m.026f2gn
opera.librettist opera.opera opera.librettist
Librettist Opera Francis de Croisset
none none none
opera.librettist.libretti opera.opera.librettist
Opera libretti written Librettist
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 :opera.librettist . 
?x1 :type.object.type :opera.opera . 
VALUES ?x2 { :m.026f2gn } 
?x0 :opera.librettist.libretti ?x1 . 
?x1 :opera.opera.librettist ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND opera.librettist (JOIN opera.librettist.libretti (JOIN opera.opera.librettist m.026f2gn)))