Question: Who chairs the political party with the official website www.liberal.ca?
Choices: Sylvester Stallone
Stephen Harper
Richard Gere
Patricia Clarkson
William Henry Harrison
Dionne Warwick
Wim Wenders
Pierre Trudeau
David Byrne
Mao Zedong
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <chairperson> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "political party" . ?e_1 <official_website> ?pv . ?pv <pred:value> "http://www.liberal.ca/" .   }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.liberal.ca/
function: FilterConcept
dependencies: 1
inputs: political party
function: Relate
dependencies: 2
inputs: chairperson
forward
function: FilterConcept
dependencies: 3
inputs: human
function: What
dependencies: 4
Answer: Pierre Trudeau