Question: Is John Legend's Twitter handle johnlegend ?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "John Legend" . ?e <Twitter_username> ?pv . ?pv <pred:value> "johnlegend" .  }
Program:
function: Find
inputs: John Legend
function: QueryAttr
dependencies: 0
inputs: Twitter username
function: VerifyStr
dependencies: 1
inputs: johnlegend
Answer: yes