Question: How many towns are in or next to the River Thames?
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Answer: 4
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "town" . ?e <located_in_or_next_to_body_of_water> ?e_1 . ?e_1 <pred:name> "River Thames" .   }
Program:
function: Find
inputs: River Thames
function: Relate
dependencies: 0
inputs: located in or next to body of water
backward
function: FilterConcept
dependencies: 1
inputs: town
function: Count
dependencies: 2