Question: What character role does Christopher Reeve play in the film Superman, distributed by Warner Bros.?
Choices: Superman
Captain B. McCrea
Christopher Pike
Professor Frink
Carlos
Samuel Brett
Ed
Nately
Danica Talos
Dario
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Superman" . ?e_1 <distributor> ?e_3 . ?e_3 <pred:name> "Warner Bros." . ?e_2 <pred:name> "Christopher Reeve" . ?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: Warner Bros.
function: Relate
dependencies: 0
inputs: distributor
backward
function: Find
inputs: Superman
function: And
dependencies: 1
2
function: Find
inputs: Christopher Reeve
function: QueryRelationQualifier
dependencies: 3
4
inputs: cast member
character role
Answer: Superman