Question: When was the rock band Earth, Wind & Fire established?
Choices:
1818-02-07
1496
1918-01-28
1427
1154
1985-01-01
1795-04-13
1567
1991-02-08
1800
Answer: 1985-01-01
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "rock music" . ?e <famous_people> ?e_1 . ?e_1 <pred:name> "Earth, Wind & Fire" .  ?e <inception> ?pv .  }
Program:
function: Find
inputs: Earth, Wind & Fire
function: Relate
dependencies: 0
inputs: famous people
backward
function: FilterConcept
dependencies: 1
inputs: rock music
function: QueryAttr
dependencies: 2
inputs: inception