Question: How is mandolin related to Edgar Meyer (the one famous for piano) ?
Choices: place of birth
famous people
participant
manufacturer
source of income
location of discovery
permanent resident of
airline alliance
occupation
official symbol
SPARQL: SELECT DISTINCT ?p WHERE { ?e_1 <pred:name> "mandolin" . ?e_2 <pred:name> "Edgar Meyer" . ?e_3 <famous_people> ?e_2 . ?e_3 <pred:name> "piano" . ?e_1 ?p ?e_2 .  }
Program:
function: Find
inputs: mandolin
function: Find
inputs: piano
function: Relate
dependencies: 1
inputs: famous people
forward
function: Find
inputs: Edgar Meyer
function: And
dependencies: 2
3
function: QueryRelation
dependencies: 0
4
Answer: famous people