Question: The Lee Metcalf National Wildlife Refuge lies along a river that is how many miles long?
Sentence (from "Bitterroot River"): The Bitterroot River is a northward flowing 84 mi river running through the Bitterroot Valley, from the confluence of its West and East forks near Conner in southern Ravalli County to its confluence with the Clark Fork River near Missoula in Missoula County, in western Montana.
Relevant evidence: Yes