Question: Iron is a nutrient in how many different food items?
Choices: 0
1
2
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5
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9
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "food ingredient" . ?e <nutrient> ?e_1 . ?e_1 <pred:name> "iron" .   }
Program:
function: Find
inputs: iron
function: Relate
dependencies: 0
inputs: nutrient
backward
function: FilterConcept
dependencies: 1
inputs: food ingredient
function: Count
dependencies: 2
Answer: 5