Question: What agent is the major theme of the film titled The Departed?
Choices: United States Marine Corps
Johnson & Johnson
Sicilian Mafia
Collingwood Football Club
Pfizer
Central Intelligence Agency
National Aeronautics and Space Administration
gang
McDonald's
Academy of Television Arts & Sciences
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "agent" . ?e_1 <main_subject> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "film" . ?e_1 <title> ?pv . ?pv <pred:value> "The Departed" .   }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: title
The Departed
function: FilterConcept
dependencies: 1
inputs: film
function: Relate
dependencies: 2
inputs: main subject
forward
function: FilterConcept
dependencies: 3
inputs: agent
function: What
dependencies: 4
Answer: Sicilian Mafia