Question: Who is the producer of the visual artwork directed by Sammo Hung?
Choices: Andy Lau
Alexander Payne
Irwin Allen
Vittorio De Sica
Phil Hartman
Andrew G. Vajna
Mark Addy
Wes Craven
Brian Grazer
Ronald Neame
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <producer> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "visual artwork" . ?e_1 <director> ?e_2 . ?e_2 <pred:name> "Sammo Hung" .   }
Program:
function: Find
inputs: Sammo Hung
function: Relate
dependencies: 0
inputs: director
backward
function: FilterConcept
dependencies: 1
inputs: visual artwork
function: Relate
dependencies: 2
inputs: producer
forward
function: FilterConcept
dependencies: 3
inputs: human
function: What
dependencies: 4
Answer: Andy Lau