Question: which horror film was based on a creature sighted around mid 1976 in Cornwall, England?
Sentence (from "Owlman"): The Owlman, sometimes referred to as the Cornish Owlman, or the Owlman of Mawnan, is a purportedly mysterious owl-like creature that, according to local folklore, was sighted around mid-1976 in the village of Mawnan, Cornwall, England.
Relevant evidence: Yes