Question: What Grammy Award did Isaac Stern receive on 1965-04-13?
Choices: Grammy Award for Best Music Film
Grammy Award for Best Dance/Electronic Album
Grammy Award for Best Alternative Music Album
Grammy Award for Best Instrumental Soloist(s) Performance (with orchestra)
Grammy Award for Song of the Year
Grammy Award for Best Jazz Vocal Album
Grammy Award for Best Classical Album
Grammy Award for Best Remixed Recording, Non-Classical
Grammy Lifetime Achievement Award
Grammy Award for Best Comedy Album
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "Grammy Award" . ?e_1 <award_received> ?e . ?e_1 <pred:name> "Isaac Stern" .  [ <pred:fact_h> ?e_1 ; <pred:fact_r> <award_received> ; <pred:fact_t> ?e ] <point_in_time> ?qpv . ?qpv <pred:date> "1965-04-13"^^xsd:date .  }
Program:
function: Find
inputs: Isaac Stern
function: Relate
dependencies: 0
inputs: award received
forward
function: QFilterDate
dependencies: 1
inputs: point in time
1965-04-13
=
function: FilterConcept
dependencies: 2
inputs: Grammy Award
function: What
dependencies: 3
Answer: Grammy Award for Best Instrumental Soloist(s) Performance (with orchestra)