Question: What military branch is the one involved in the Battle of Britain conflict - the one that is the main subject of Mrs. Miniver ?
Choices:
German Army
Royal Canadian Air Force
Royal Australian Air Force
Royal Naval Air Service
Royal Navy
United States Army Air Corps
United States Marine Corps
Waffen-SS
Royal Air Force
Luftwaffe
Answer: Royal Canadian Air Force
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "military branch" . ?e <conflict> ?e_1 . ?e_1 <pred:name> "Battle of Britain" . ?e_2 <main_subject> ?e_1 . ?e_2 <pred:name> "Mrs. Miniver" .   }
Program:
function: Find
inputs: Mrs. Miniver
function: Relate
dependencies: 0
inputs: main subject
forward
function: Find
inputs: Battle of Britain
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: conflict
backward
function: FilterConcept
dependencies: 4
inputs: military branch
function: What
dependencies: 5