Question: What US city is a place where we can find the headquarters of video game development that is the child organization of Activision Blizzard ?
Choices: Irvine
Rockville
Columbus
Northampton
Franklin
Burbank
Scottsdale
Santa Cruz
Austin
Waukegan
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "city of the United States" . ?e_1 <headquarters_location> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "video game developer" . ?e_1 <parent_organization> ?e_2 . ?e_2 <pred:name> "Activision Blizzard" .   }
Program:
function: Find
inputs: Activision Blizzard
function: Relate
dependencies: 0
inputs: parent organization
backward
function: FilterConcept
dependencies: 1
inputs: video game developer
function: Relate
dependencies: 2
inputs: headquarters location
forward
function: FilterConcept
dependencies: 3
inputs: city of the United States
function: What
dependencies: 4
Answer: Irvine