premise: Argonotes, the unofficial band of the Toronto Argonauts is an all volunteer organization committed to bringing quality musical entertainment and a "traditional football atmosphere" to all Argonauts home football games. Comprising more than 50 musicians on most game days, Argonotes is the largest musical organization associated with the CFL.
hypothesis: There is one musical organization associated with the CFL larger than Argonotes.
reason: It's the largest organization, so there can't be one larger than it. It's difficult because the statement closely resembles the text.