Question: For Superman Returns (the one whose genre is action film), what is Frank Langella's character role as a cast member in the work?
Choices: Invisible Woman
Tasmanian Devil
Count Dooku
Angelo 'Snaps' Provolone
Chas Chandler
Perry White
Priam
Mr. Tumnus
Nikita Khrushchev
Jean-Luc Picard
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Superman Returns" . ?e_1 <genre> ?e_3 . ?e_3 <pred:name> "action film" . ?e_2 <pred:name> "Frank Langella" . ?e_1 <cast_member> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <cast_member> ; <pred:fact_t> ?e_2 ] <character_role> ?qpv .  }
Program:
function: Find
inputs: action film
function: Relate
dependencies: 0
inputs: genre
backward
function: Find
inputs: Superman Returns
function: And
dependencies: 1
2
function: Find
inputs: Frank Langella
function: QueryRelationQualifier
dependencies: 3
4
inputs: cast member
character role
Answer: Perry White