Question: When did the agent whose official website is http://www.nikon.com/ begin?
Choices: 1917-01-01
1982-01-01
1840
2006-03-11
1839-03-01
1946-04-21
1348-04-07
1794
1811-03-01
1837-01-26
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "agent" . ?e <official_website> ?pv_1 . ?pv_1 <pred:value> "http://www.nikon.com/" . ?e <inception> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.nikon.com/
function: FilterConcept
dependencies: 1
inputs: agent
function: QueryAttr
dependencies: 2
inputs: inception
Answer: 1917-01-01