Question: Is Ca the element symbol of calcium?3
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "calcium" . ?e <element_symbol> ?pv . ?pv <pred:value> "Ca" .  }
Program:
function: Find
inputs: calcium
function: QueryAttr
dependencies: 0
inputs: element symbol
function: VerifyStr
dependencies: 1
inputs: Ca
Answer: yes