Question: What is the character role of Holly Marie Combs in Charmed (the one that has Aaron Spelling as an executive producer)?
Choices: Sean Parker
Augustus
Thetis
Penny Barrington
Henri Ducard
Piper Halliwell
Qui-Gon Jinn
Gabriella Montez
Tycho Nestoris
Lord Farquaad
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Charmed" . ?e_1 <executive_producer> ?e_3 . ?e_3 <pred:name> "Aaron Spelling" . ?e_2 <pred:name> "Holly Marie Combs" . ?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: Aaron Spelling
function: Relate
dependencies: 0
inputs: executive producer
backward
function: Find
inputs: Charmed
function: And
dependencies: 1
2
function: Find
inputs: Holly Marie Combs
function: QueryRelationQualifier
dependencies: 3
4
inputs: cast member
character role
Answer: Piper Halliwell