Question: Is rkelly the Twitter username of Aaliyah's spouse?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <spouse> ?e . ?e_1 <pred:name> "Aaliyah" .  ?e <Twitter_username> ?pv . ?pv <pred:value> "rkelly" .  }
Program:
function: Find
inputs: Aaliyah
function: Relate
dependencies: 0
inputs: spouse
forward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: Twitter username
function: VerifyStr
dependencies: 3
inputs: rkelly
Answer: yes