Question: Penlee Point, the coastal headland to the SW of the village of Rame in southeast Cornwall, UK, lies at the entrance of what body of water? 
Sentence (from "Cornwall"): The county is bordered to the north and west by the Celtic Sea, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar which forms most of the border between them.
Relevant evidence: No