Question: How many activities match a topic that contains an economic branch which uses train ?
Choices: 0
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SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "activity" . ?e_1 <facet_of> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "economic branch" . ?e_2 <use> ?e_1 . ?e_2 <pred:name> "train" .   }
Program:
function: Find
inputs: train
function: Relate
dependencies: 0
inputs: use
forward
function: FilterConcept
dependencies: 1
inputs: economic branch
function: Relate
dependencies: 2
inputs: facet of
forward
function: FilterConcept
dependencies: 3
inputs: activity
function: Count
dependencies: 4
Answer: 0