Premise: Audra McDonald . She has appeared on the stage in both musicals and dramas , such as Ragtime , A Raisin in the Sun , and Porgy and Bess . Porgy and Bess is an English-language opera composed in 1934 by George Gershwin , with a libretto written by DuBose Heyward and Ira Gershwin .
Hypothesis: Audra McDonald has acted in every Gershwin musical except Porgy and Bess.
Label: CONTRADICTION