Question: What is the area for the U.S. city that is the birthplace of Ben Gibbard?
Choices: 83.140067 square kilometre
214970 square kilometre
139390.0 square kilometre
29 square kilometre
94163 square kilometre
25809 square kilometre
8148250 square kilometre
32800.69 square kilometre
10416 square kilometre
491210.0 square kilometre
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "city of the United States" . ?e_1 <place_of_birth> ?e . ?e_1 <pred:name> "Ben Gibbard" .  ?e <area> ?pv .  }
Program:
function: Find
inputs: Ben Gibbard
function: Relate
dependencies: 0
inputs: place of birth
forward
function: FilterConcept
dependencies: 1
inputs: city of the United States
function: QueryAttr
dependencies: 2
inputs: area
Answer: 83.140067 square kilometre