Question: What rock band received the award, it received by Vladimir Horowitz(the point in time of this statement is 2007)?
Choices: Queen
Grateful Dead
The Beatles
Joan Baez
Journey
Led Zeppelin
The Velvet Underground
The Doors
Marilyn Manson
Camel
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "rock band" . ?e <award_received> ?e_1 . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "award" . ?e_2 <award_received> ?e_1 . ?e_2 <pred:name> "Vladimir Horowitz" .  [ <pred:fact_h> ?e ; <pred:fact_r> <award_received> ; <pred:fact_t> ?e_1 ] <point_in_time> ?qpv . ?qpv <pred:year> 2007 .  }
Program:
function: Find
inputs: Vladimir Horowitz
function: Relate
dependencies: 0
inputs: award received
forward
function: FilterConcept
dependencies: 1
inputs: award
function: Relate
dependencies: 2
inputs: award received
backward
function: QFilterYear
dependencies: 3
inputs: point in time
2007
=
function: FilterConcept
dependencies: 4
inputs: rock band
function: What
dependencies: 5
Answer: The Doors