Question: What is the Reddit username of the person who holds the position of chairperson for The Trump Organization?
Choices: actuallymenph
The_Conan_Obrien
IamNPH
PresidentObama
_KeanuReeves
_RichardDawkins
the-realDonaldTrump
_Madonna
SethMacFarlane_
JohnnyEnglish_Rowan
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <position_held> ?e_1 . ?e_1 <pred:name> "chairperson" .  [ <pred:fact_h> ?e ; <pred:fact_r> <position_held> ; <pred:fact_t> ?e_1 ] <employer> ?qpv . ?qpv <pred:value> "The Trump Organization" . ?e <Reddit_username> ?pv .  }
Program:
function: Find
inputs: chairperson
function: Relate
dependencies: 0
inputs: position held
backward
function: QFilterStr
dependencies: 1
inputs: employer
The Trump Organization
function: FilterConcept
dependencies: 2
inputs: human
function: QueryAttr
dependencies: 3
inputs: Reddit username
Answer: the-realDonaldTrump