Question: The river 2850 km long is the tributary of how many bodies of water?
Choices: 0
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SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "water area" . ?e <tributary> ?e_1 . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "river" . ?e_1 <length> ?pv . ?pv <pred:unit> "kilometre" . ?pv <pred:value> "2850"^^xsd:double .   }
Program:
function: FindAll
function: FilterNum
dependencies: 0
inputs: length
2850 kilometre
=
function: FilterConcept
dependencies: 1
inputs: river
function: Relate
dependencies: 2
inputs: tributary
backward
function: FilterConcept
dependencies: 3
inputs: water area
function: Count
dependencies: 4
Answer: 0