Question: Which person famously associated with the keyboard instrument has the official website www.dgmlive.com?
Choices: John Denver
Sylvester Stallone
Max Fleischer
Tim Armstrong
Robert Fripp
George Martin
William Henry Harrison
Nick Mason
Joe Hisaishi
Neil Young
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <official_website> ?pv . ?pv <pred:value> "http://www.dgmlive.com/" . ?e_1 <famous_people> ?e . ?e_1 <pred:name> "keyboard instrument" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.dgmlive.com/
function: FilterConcept
dependencies: 1
inputs: human
function: Find
inputs: keyboard instrument
function: Relate
dependencies: 3
inputs: famous people
forward
function: FilterConcept
dependencies: 4
inputs: human
function: And
dependencies: 2
5
function: What
dependencies: 6
Answer: Robert Fripp