Question: What musical composition's famous people are Ralph Vaughan Williams and Richard Rodney Bennett?
Choices: ballet
Yellow Submarine
Wuthering Heights
opera
The Sorcerer's Apprentice
Massachusetts
film score
Katharine Hepburn
P.S. I Love You
Never Say Never Again
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "musical composition" . ?e <famous_people> ?e_1 . ?e_1 <pred:name> "Ralph Vaughan Williams" .  ?e <famous_people> ?e_2 . ?e_2 <pred:name> "Richard Rodney Bennett" .  }
Program:
function: Find
inputs: Ralph Vaughan Williams
function: Relate
dependencies: 0
inputs: famous people
backward
function: FilterConcept
dependencies: 1
inputs: musical composition
function: Find
inputs: Richard Rodney Bennett
function: Relate
dependencies: 3
inputs: famous people
backward
function: FilterConcept
dependencies: 4
inputs: musical composition
function: And
dependencies: 2
5
function: What
dependencies: 6
Answer: ballet