Question: Which recording label is associated with opera's Craig Armstrong as well as David Guetta?
Choices: Astralwerks
Asylum Records
Epic Records
Imperial Records
Century Media Records
Play It Again Sam
Epitaph Records
Southern Lord Records
Capitol Records
Liberty Records
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "record label" . ?e_1 <record_label> ?e . ?e_1 <pred:name> "Craig Armstrong" . ?e_1 <genre> ?e_2 . ?e_2 <pred:name> "opera" .  ?e_3 <record_label> ?e . ?e_3 <pred:name> "David Guetta" .  }
Program:
function: Find
inputs: opera
function: Relate
dependencies: 0
inputs: genre
backward
function: Find
inputs: Craig Armstrong
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: record label
forward
function: FilterConcept
dependencies: 4
inputs: record label
function: Find
inputs: David Guetta
function: Relate
dependencies: 6
inputs: record label
forward
function: FilterConcept
dependencies: 7
inputs: record label
function: And
dependencies: 5
8
function: What
dependencies: 9
Answer: Astralwerks