Question: Which organization is the parent of the agency whose child organization was Warner Music Group beginning in 1990?
Choices:
Pfizer
Sega
Skidmore Owings Merrill
AT&T
McDonald's
Silver Pictures
German Army
Vodafone
Cammell Laird
Royal Naval Air Service
Answer: AT&T
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "organization" . ?e_1 <parent_organization> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "agent" . ?e_2 <parent_organization> ?e_1 . ?e_2 <pred:name> "Warner Music Group" . [ <pred:fact_h> ?e_2 ; <pred:fact_r> <parent_organization> ; <pred:fact_t> ?e_1 ] <start_time> ?qpv . ?qpv <pred:year> 1990 .   }
Program:
function: Find
inputs: Warner Music Group
function: Relate
dependencies: 0
inputs: parent organization
forward
function: QFilterYear
dependencies: 1
inputs: start time
1990
=
function: FilterConcept
dependencies: 2
inputs: agent
function: Relate
dependencies: 3
inputs: parent organization
forward
function: FilterConcept
dependencies: 4
inputs: organization
function: What
dependencies: 5