Question: What physics engine is the software engine of the video games with the official Japanese-language website  http://sonic.sega.jp/sonic/ ?
Choices: University of Wales
George Frideric Handel
Mike Epps
Houston Rockets
Bridgend
Dunfermline
Tombstone
Havok
How I Met Your Mother
Imperial Records
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "physics engine" . ?e_1 <software_engine> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "video game" . ?e_1 <official_website> ?pv_1 . ?pv_1 <pred:value> "http://sonic.sega.jp/sonic/" . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <official_website> ; <pred:fact_t> ?pv_1 ] <language_of_work_or_name> ?qpv . ?qpv <pred:value> "Japanese" .   }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://sonic.sega.jp/sonic/
function: QFilterStr
dependencies: 1
inputs: language of work or name
Japanese
function: FilterConcept
dependencies: 2
inputs: video game
function: Relate
dependencies: 3
inputs: software engine
forward
function: FilterConcept
dependencies: 4
inputs: physics engine
function: What
dependencies: 5
Answer: Havok