Question: What is Mos Def's role in Hitchhiker's Guide to the Galaxy produced by Walt Disney Studios Motion Pictures?
Choices: Ptolemy I Soter
Superman
Karen McCluskey
Virgilia
Ford Prefect
William Brocius
Calhoun
him/herself
Nelson Rockefeller
Rufio
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "The Hitchhiker's Guide to the Galaxy" . ?e_1 <production_company> ?e_3 . ?e_3 <pred:name> "Walt Disney Studios Motion Pictures" . ?e_2 <pred:name> "Mos Def" . ?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: Walt Disney Studios Motion Pictures
function: Relate
dependencies: 0
inputs: production company
backward
function: Find
inputs: The Hitchhiker's Guide to the Galaxy
function: And
dependencies: 1
2
function: Find
inputs: Mos Def
function: QueryRelationQualifier
dependencies: 3
4
inputs: cast member
character role
Answer: Ford Prefect