Question: When was the Southern Railway 107 sold to help with the construction of a hydroelectric dam on the French Broad River in Sevier County, Tennessee?
Sentence (from "Marysvale Canyon"): To the south the canyon starts about 2 mi north of Marysvale where the broad Sevier Valley narrows abruptly from a broad 5 - wide valley to a narrow gorge.
Relevant evidence: No