Question: Who is considered among the three foremost playwrights of 20th-century American drama, Tennessee Williams or E. B. White?
Context: Steven Dietz (born June 23, 1958) is an American playwright.  With the exception of "Fiction", produced Off-Broadway by the Roundabout Theatre Company in 2004, the vast majority of Dietz's plays are produced in American regional theaters.  During the 2015-16 season, Dietz premiered three new plays: "Bloomsday" (American Theatre Critics Association Steinberg New Play Award Citation), "This Random World" (Humana Festival of New American Plays), and the thriller "On Clover Road" (National New Play Network rolling world premiere).  In 2010, Dietz was once again named one of the most produced playwrights in America (excluding Shakespeare), placing eighth on the list of the Top Ten Most Produced Playwrights in America, tied with Tennessee Williams and Edward Albee for number of productions.  Other recent plays include the black comedy, "Rancho Mirage", and the contemporary riff on Arthur Schnitzler's "Reigen" entitled "American la Ronde".  Dietz has taught in the MFA Playwriting and Directing programs at the University of Texas at Austin since 2006 .  In addition, he is a Dramatists Guild "Traveling Master", teaching workshops and master classes on playwriting and story-making around the U.S. Thomas Lanier "Tennessee" Williams III (March 26, 1911 – February 25, 1983) was an American playwright.  Along with Eugene O'Neill and Arthur Miller, he is considered among the three foremost playwrights of 20th-century American drama. Elwyn Brooks "E. B." White (July 11, 1899 – October 1, 1985) was an American writer.  He was a contributor to The New Yorker magazine and a co-author of the English language style guide "The Elements of Style", which is commonly known as "Strunk & White".  He also wrote books for children, including "Stuart Little" in 1945, "Charlotte's Web" in 1952, and "The Trumpet of the Swan" in 1970.  "Charlotte's Web" was voted the top children's novel in a 2012 survey of "School Library Journal" readers, an accomplishment repeated from earlier surveys. Alan Maynard Wald, usually Alan M. Wald or Alan Wald, is an American professor emeritus of English Literature and American Culture at the University of Michigan, Ann Arbor, and writer of 20th-Century American literature who focuses on Communist writers; he is an expert on the American 20th-Century "Literary Left." The Tennessee Williams/New Orleans Literary Festival is an annual five-day literary festival in the city of New Orleans.  The festival is dedicated to the Pulitzer prize-winning American playwright Tennessee Williams.  Every year, it features several events related to the long career of that writer, as well as writing workshops, panel discussions, literary readings, stage performances, a book fair, music, writing contests, and other events related to American literature, poetry, drama, opera, film, photography, art, history, culture, and cooking.  The signature event is the "Stella and Stanley Shouting Contest" that closes the festival. Clifford Odets (July 18, 1906 – August 14, 1963) was an American playwright, screenwriter, and director.  Odets was widely seen as successor to Nobel Prize-winning playwright Eugene O'Neill as O'Neill began to retire from Broadway's commercial pressures and increasing critical backlash in the mid-1930s.  From early 1935 on, Odets' socially relevant dramas proved extremely influential, particularly for the remainder of the Great Depression.  Odets' works inspired the next several generations of playwrights, including Arthur Miller, Paddy Chayefsky, Neil Simon, David Mamet, and Jon Robin Baitz.  After the production of his play "Clash by Night" in the 1941–1942 season, Odets focused his energies on film projects, remaining in Hollywood for the next seven years.  He began to be eclipsed by such playwrights as Miller, Tennessee Williams and, in 1950, William Inge. The Sidney Howard Memorial Award was a notable but short-lived theater prize established in 1939.  It was designed to support new playwrights who had no notable successes but had shown promise.  Among the awardees are Robert Ardrey and Tennessee Williams. Memory play is a play in which a lead character narrates the events of the play, which are drawn from the character's memory.  The term was coined by playwright Tennessee Williams, describing his work "The Glass Menagerie".  In his production notes, Williams says, "Being a 'memory play', "The Glass Menagerie" can be presented with unusual freedom of convention."  In a widening of the definition, it has been argued that Harold Pinter's plays "Old Times", "No Man's Land" and "Betrayal" are memory plays, where "memory becomes a weapon".  Brian Friel's "Dancing at Lughnasa" is a late 20th-century example of the genre. Aureliano Oyarzún Navarro (b. 1858 – d. 1947) was a Chilean physician, who became an anthropologist through his study of early cultures in Chile, including the indigenous peoples of Tierra del Fuego.  He is considered among the most prominent early 20th-century researchers, together with the Austrians Max Uhle and Martin Gusinde. Claude Sheetz "Blinkey" Horn (August 28, 1885 – May 20, 1937) was an early 20th-century American sportswriter, known most for his work in the "Nashville Tennessean".  He was a charter member of the Tennessee Sports Hall of Fame in 1966.  He was later inducted into the Tennessee Sports Writers Hall of Fame.
Answer: Thomas Lanier "Tennessee" Williams III