Question: What is cast member Anthony Head's character role in Buffy the Vampire Slayer (which has James Marsters as a cast member)?
Choices: Invisible Woman
Frank Burns
SpongeBob SquarePants
Mikael Blomkvist
Rupert Giles
Grumpy
Human Torch
Erik
Don
Carlos
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Buffy the Vampire Slayer" . ?e_1 <cast_member> ?e_3 . ?e_3 <pred:name> "James Marsters" . ?e_2 <pred:name> "Anthony Head" . ?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: James Marsters
function: Relate
dependencies: 0
inputs: cast member
backward
function: Find
inputs: Buffy the Vampire Slayer
function: And
dependencies: 1
2
function: Find
inputs: Anthony Head
function: QueryRelationQualifier
dependencies: 3
4
inputs: cast member
character role
Answer: Rupert Giles