Question: How is the PBS production of David Copperfield related to the United Kingdom?
Choices: director/manager
editor
talk show guest
series spin-off
copyright representative
natural product of taxon
military conflicts
country of origin
subsidiary
operating system
SPARQL: SELECT DISTINCT ?p WHERE { ?e_1 <pred:name> "David Copperfield" . ?e_1 <production_company> ?e_3 . ?e_3 <pred:name> "PBS" . ?e_2 <pred:name> "United Kingdom" . ?e_1 ?p ?e_2 .  }
Program:
function: Find
inputs: PBS
function: Relate
dependencies: 0
inputs: production company
backward
function: Find
inputs: David Copperfield
function: And
dependencies: 1
2
function: Find
inputs: United Kingdom
function: QueryRelation
dependencies: 3
4
Answer: country of origin