Question: Who is the executive producer of the visual artwork with official website http://www.Ghostbusters.com/ ?
Choices: John Wells
Andrew G. Vajna
Dan Aykroyd
James Blunt
Roger Birnbaum
Kirk Douglas
Jane Campion
Frank Marshall
Paul Feig
Leighton Meester
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <executive_producer> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "visual artwork" . ?e_1 <official_website> ?pv . ?pv <pred:value> "http://www.Ghostbusters.com/" .   }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.Ghostbusters.com/
function: FilterConcept
dependencies: 1
inputs: visual artwork
function: Relate
dependencies: 2
inputs: executive producer
forward
function: FilterConcept
dependencies: 3
inputs: human
function: What
dependencies: 4
Answer: Dan Aykroyd