Question: What is the character role of Amber Benson as a cast member in  Buffy the Vampire Slayer (the one that is a notable work of Sarah Michelle Gellar)?
Choices: Diane Lockhart
Jin-Soo Kwon
Tara Maclay
Derek Smalls
Valentin Zukovsky
Clotho
Napoleon
Dominic Toretto
Richard Harrow
Alonzo Harris
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Buffy the Vampire Slayer" . ?e_3 <notable_work> ?e_1 . ?e_3 <pred:name> "Sarah Michelle Gellar" . ?e_2 <pred:name> "Amber Benson" . ?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: Sarah Michelle Gellar
function: Relate
dependencies: 0
inputs: notable work
forward
function: Find
inputs: Buffy the Vampire Slayer
function: And
dependencies: 1
2
function: Find
inputs: Amber Benson
function: QueryRelationQualifier
dependencies: 3
4
inputs: cast member
character role
Answer: Tara Maclay