Question: What popular music has a famous person named Nick Mason and a beginning date prior to 1967?
Choices: post-grunge
instrumental rock
hard bop
cool jazz
neo-progressive rock
hard rock
acid rock
lounge music
crossover thrash
surf music
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "popular music" . ?e <famous_people> ?e_1 . ?e_1 <pred:name> "Nick Mason" .  ?e <inception> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1967 ) .  }
Program:
function: Find
inputs: Nick Mason
function: Relate
dependencies: 0
inputs: famous people
backward
function: FilterConcept
dependencies: 1
inputs: popular music
function: FindAll
function: FilterYear
dependencies: 3
inputs: inception
1967
<
function: FilterConcept
dependencies: 4
inputs: popular music
function: And
dependencies: 2
5
function: What
dependencies: 6
Answer: instrumental rock