Question: What class of instruments were used by George Martin who died in Swindon and were used by George Frideric Handel?
Choices:
tenor saxophone
baritone saxophone
oboe
Timbales
xylophone
flugelhorn
didgeridoo
harpsichord
maraca
goblet drum
Answer: oboe
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "class of instruments" . ?e_1 <instrument> ?e . ?e_1 <pred:name> "George Martin" . ?e_1 <place_of_death> ?e_2 . ?e_2 <pred:name> "Swindon" .  ?e_3 <instrument> ?e . ?e_3 <pred:name> "George Frideric Handel" .  }
Program:
function: Find
inputs: Swindon
function: Relate
dependencies: 0
inputs: place of death
backward
function: Find
inputs: George Martin
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: instrument
forward
function: FilterConcept
dependencies: 4
inputs: class of instruments
function: Find
inputs: George Frideric Handel
function: Relate
dependencies: 6
inputs: instrument
forward
function: FilterConcept
dependencies: 7
inputs: class of instruments
function: And
dependencies: 5
8
function: What
dependencies: 9