Question: What is the role of Alan Tudyk in  Superman (the one that derives Superman IV: The Quest for Peace)?
Choices: songwriting alias
mineral
first language
band member
drummer
voice actor
Three pillars of the European Union
pen pal
noun
Justice League Heroes
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Superman" . ?e_1 <derivative_work> ?e_3 . ?e_3 <pred:name> "Superman IV: The Quest for Peace" . ?e_2 <pred:name> "Alan Tudyk" . ?e_1 <performer> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <performer> ; <pred:fact_t> ?e_2 ] <object_has_role> ?qpv .  }
Program:
function: Find
inputs: Superman IV: The Quest for Peace
function: Relate
dependencies: 0
inputs: derivative work
backward
function: Find
inputs: Superman
function: And
dependencies: 1
2
function: Find
inputs: Alan Tudyk
function: QueryRelationQualifier
dependencies: 3
4
inputs: performer
object has role
Answer: voice actor