Premise: The Sun Also Rises is a one-act opera by Webster A. Young, based on Ernest Hemingway's "The Sun Also Rises". It is one of a pair of Hemingway works that Young adapted into operas. The opera's libretto is by the composer, and includes direct quotations from the novel. It premiered on May 7, 2000 at the Long Island Opera.
Hypothesis: Ernest Hemingway and Webster A. Young wrote all the words of the opera The Sun Also Rises