Question: Which is he professional instrument used by Yann Tiersen?
Choices: multi-instrumentalist
financier
make-up artist
news presenter
astronaut
illustrator
piano
seiyū
general counsel
bandleader
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "profession" . ?e_1 <instrument> ?e . ?e_1 <pred:name> "Yann Tiersen" .   }
Program:
function: Find
inputs: Yann Tiersen
function: Relate
dependencies: 0
inputs: instrument
forward
function: FilterConcept
dependencies: 1
inputs: profession
function: What
dependencies: 2
Answer: multi-instrumentalist