Question: Which US city is related to sport American football?
Choices: Green Bay
Wheeling
Jim Clark
Chris Carter
George Martin
Hollywood
Art Carney
Brian Jones
John Goodman
Quincy
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "city of the United States" . ?e <sport> ?e_1 . ?e_1 <pred:name> "American football" .   }
Program:
function: Find
inputs: American football
function: Relate
dependencies: 0
inputs: sport
backward
function: FilterConcept
dependencies: 1
inputs: city of the United States
function: What
dependencies: 2
Answer: Green Bay