Question: What is the character role of Wil Wheaton in  Star Trek: The Next Generation (the one that has Patrick Stewart as a cast member)?
Choices: Rupert Giles
Finis Valorum
Lindy Chamberlain-Creighton
Bernard
Thunderbolt Ross
Wesley Crusher
Chi-Fu
Gail
Nigel Tufnel
Yosemite Sam
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Star Trek: The Next Generation" . ?e_1 <cast_member> ?e_3 . ?e_3 <pred:name> "Patrick Stewart" . ?e_2 <pred:name> "Wil Wheaton" . ?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: Patrick Stewart
function: Relate
dependencies: 0
inputs: cast member
backward
function: Find
inputs: Star Trek: The Next Generation
function: And
dependencies: 1
2
function: Find
inputs: Wil Wheaton
function: QueryRelationQualifier
dependencies: 3
4
inputs: cast member
character role
Answer: Wesley Crusher