Question: Is PA the IATA airline designator for Pan Am (whose original location is in Key West)?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "Pan Am" . ?e <location_of_formation> ?e_1 . ?e_1 <pred:name> "Key West" .  ?e <IATA_airline_designator> ?pv . ?pv <pred:value> "PA" .  }
Program:
function: Find
inputs: Key West
function: Relate
dependencies: 0
inputs: location of formation
backward
function: Find
inputs: Pan Am
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: IATA airline designator
function: VerifyStr
dependencies: 4
inputs: PA
Answer: yes