Definition: In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.
Input: Question: Of the two artists that New York harmonica virtuoso Nat Riddles performed and recorded with, who is younger? Passage:Around this time Gussow, a Princeton graduate and English M.A. student at Columbia University, first saw Magee and his trio performing on the corner of 114th Street and Broadway. (Gussow relates the story in his 1998 blues memoir, Mister Satan's Apprentice.) Gussow, a guitarist and harmonica player whose performing experience had previously been limited to a handful of high school and college bands, was galvanized by the encounter. After dropping out of grad school, Gussow spent several years as a part-time street performer in New York and Europe. Gussow's transformation from an academic to a blues player was facilitated by lessons he took from his mentor, New York harmonica virtuoso Nat Riddles, who had performed and recorded with Larry Johnson, Odetta, and others, and by his acculturation into the jam session life at Dan Lynch, a storied East Village juke joint.

Output:
Gussow's transformation from an academic to a blues player was facilitated by lessons he took from his mentor, New York harmonica virtuoso Nat Riddles, who had performed and recorded with Larry Johnson, Odetta, and others, and by his acculturation into the jam session life at Dan Lynch, a storied East Village juke joint