premise: The Southern Renaissance (also known as Southern Renascence) was the reinvigoration of American Southern literature that began in the 1920s and 1930s with the appearance of writers such as William Faulkner, Thomas Wolfe, Caroline Gordon, Elizabeth Madox Roberts, Katherine Anne Porter, Allen Tate, Tennessee Williams, Robert Penn Warren, and Zora Neale Hurston, among others.
hypothesis: Katherine Ann Porter was not the only American Southern female literature author.
reason: Katherine Ann Porter wasn't the only American Southern female literature author because Elizabeth Madox Roberts, Caroline Gordon, and Zora Neale Hurston were too.