Question: What is a tributary of the river near Tazewell, Virginia, and flows southwest for more than 300 mi through the Great Appalachian Valley, that drains a watershed area of 86.5 mi2 between Copper Ridge and Black Oak Ridge ?
Sentence (from "Blue Ridge Mountains"): To the west of the Blue Ridge, between it and the bulk of the Appalachians, lies the Great Appalachian Valley, bordered on the west by the Ridge and Valley province of the Appalachian range.
Relevant evidence: No