Question: Franklin Delano Roosevelt Wakefield, is an innovative American player, of which instrument, in the bluegrass music style, Wakefield is known for his collaborations with a number of important and well-known bands, including The Stanley Brothers?
Sentence (from "Frank Wakefield"): Wakefield is known for his collaborations with a number of important and well-known bands, including Red Allen, Don Reno, Jerry Garcia, David Grisman, The Stanley Brothers, and the Greenbriar Boys.
Relevant evidence: No