Question: How many silent films were produced by Metro-Goldwyn-Mayer?
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Answer: 2
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "silent film" . ?e <production_company> ?e_1 . ?e_1 <pred:name> "Metro-Goldwyn-Mayer" .   }
Program:
function: Find
inputs: Metro-Goldwyn-Mayer
function: Relate
dependencies: 0
inputs: production company
backward
function: FilterConcept
dependencies: 1
inputs: silent film
function: Count
dependencies: 2