Question: The movie titled Green Zone is about which war?
Choices: Vietnam War
Yom Kippur War
Spanish Civil War
Crusade
First War of Indian Independence of 1857
Second Boer War
Korean War
Seven Years' War
Lebanese Civil War
Iraq War
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "war" . ?e_1 <main_subject> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "film" . ?e_1 <title> ?pv . ?pv <pred:value> "Green Zone" .   }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: title
Green Zone
function: FilterConcept
dependencies: 1
inputs: film
function: Relate
dependencies: 2
inputs: main subject
forward
function: FilterConcept
dependencies: 3
inputs: war
function: What
dependencies: 4
Answer: Iraq War