Question: What country is associated with the basketball team with the official color of white, with the Twitter username of DukeMBB?
Choices: Iran
Iceland
Hungary
United States of America
Bhutan
Scotland
Georgia
Chile
Kenya Colony
Israel
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "basketball team" . ?e <official_color> ?e_1 . ?e_1 <pred:name> "white" .  ?e <Twitter_username> ?pv . ?pv <pred:value> "DukeMBB" . [ <pred:fact_h> ?e ; <pred:fact_r> <Twitter_username> ; <pred:fact_t> ?pv ] <country> ?qpv .  }
Program:
function: Find
inputs: white
function: Relate
dependencies: 0
inputs: official color
backward
function: FilterConcept
dependencies: 1
inputs: basketball team
function: QueryAttrQualifier
dependencies: 2
inputs: Twitter username
DukeMBB
country
Answer: United States of America