Question: Which person's official website is http://www.stephenstills.com/?
Choices: Sylvester Stallone
Dave Grohl
Hal David
Richard Gere
Max Fleischer
Steven Zaillian
Stephen Stills
Jonathan Murray
Snoop Dogg
William Henry Harrison
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <official_website> ?pv . ?pv <pred:value> "http://www.stephenstills.com/" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.stephenstills.com/
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
Answer: Stephen Stills