Question: What is the size in area of the Pennsylvania city of Alex North's birth?
Choices: 17828.21 hectare
12.535643 square kilometre
26488 square kilometre
2952 square kilometre
39.025505 square kilometre
45800 square kilometre
5915 square kilometre
1069 square kilometre
15.554672 square kilometre
28278 square mile
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "city of Pennsylvania" . ?e_1 <place_of_birth> ?e . ?e_1 <pred:name> "Alex North" .  ?e <area> ?pv .  }
Program:
function: Find
inputs: Alex North
function: Relate
dependencies: 0
inputs: place of birth
forward
function: FilterConcept
dependencies: 1
inputs: city of Pennsylvania
function: QueryAttr
dependencies: 2
inputs: area
Answer: 15.554672 square kilometre