Question: Who served as director of photography on the film scripted by Barbra Streisand?
Choices:
William H. Daniels
Jodie Foster
John Wood
George Barnes
Joseph F. Biroc
Peter Hyams
William A. Fraker
Harold Rosson
Shakti Kapoor
David Watkin
Answer: David Watkin
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <director_of_photography> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "film" . ?e_1 <screenwriter> ?e_2 . ?e_2 <pred:name> "Barbra Streisand" .   }
Program:
function: Find
inputs: Barbra Streisand
function: Relate
dependencies: 0
inputs: screenwriter
backward
function: FilterConcept
dependencies: 1
inputs: film
function: Relate
dependencies: 2
inputs: director of photography
forward
function: FilterConcept
dependencies: 3
inputs: human
function: What
dependencies: 4