Question: What agent's headquarters location is Camden and country is the United States of America?
Choices: Revolution Studios
Marriott International
Sega
McDonald's
MCA Inc.
United States Department of Defense
Ohio Senate
New York Shipbuilding Corporation
Silver Pictures
United States Fish and Wildlife Service
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "agent" . ?e <headquarters_location> ?e_1 . ?e_1 <pred:name> "Camden" .  ?e <country> ?e_2 . ?e_2 <pred:name> "United States of America" .  }
Program:
function: Find
inputs: Camden
function: Relate
dependencies: 0
inputs: headquarters location
backward
function: FilterConcept
dependencies: 1
inputs: agent
function: Find
inputs: United States of America
function: Relate
dependencies: 3
inputs: country
backward
function: FilterConcept
dependencies: 4
inputs: agent
function: And
dependencies: 2
5
function: What
dependencies: 6
Answer: New York Shipbuilding Corporation