Question: How many chemical compounds have the chemical formula C₅H₁₁NO₂?
Choices:
0
1
2
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9
Answer: 1
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "chemical compound" . ?e <chemical_formula> ?pv . ?pv <pred:value> "C₅H₁₁NO₂" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: chemical formula
C₅H₁₁NO₂
function: FilterConcept
dependencies: 1
inputs: chemical compound
function: Count
dependencies: 2