question: Who plays the Wicked Witch of the West on ABC's "Once Upon a time" inspired by the novel by L. Frank Baum?
answer: Rebecca Mader
context: Title: Wicked (Maguire novel)
  Passage: Wicked: The Life and Times of the Wicked Witch of the West is a novel published in 1995 written by Gregory Maguire and illustrated by Douglas Smith.  It is a revisionist look at the land and characters of Oz from L. Frank Baum's 1900 novel "The Wonderful Wizard of Oz", its sequels, and the 1939 film adaption "The Wizard of Oz".  Unlike the popular 1939 movie and Baum's writings, this novel is not directed at children, and contains adult language and content including violent imagery and sexual situations.
  Title: Wicked (musical)
  Passage: Wicked: The Untold Story of the Witches of Oz is a Broadway musical with music and lyrics by Stephen Schwartz and book by Winnie Holzman.  It is based on the 1995 Gregory Maguire novel "", an alternative telling of the 1939 film "The Wizard of Oz" and L. Frank Baum's classic 1900 story, "The Wonderful Wizard of Oz".  The musical is told from the perspective of the witches of the Land of Oz; its plot begins before and continues after Dorothy's arrival in Oz from Kansas, and it includes several references to the 1939 film and Baum's novel.  "Wicked" tells the story of two unlikely friends, Elphaba (the Wicked Witch of the West) and Galinda (whose name later changes to Glinda the Good Witch), who struggle through opposing personalities and viewpoints, rivalry over the same love-interest, reactions to the Wizard's corrupt government and, ultimately, Elphaba's public fall from grace.
  Title: Wicked Witch of the West
  Passage: The Wicked Witch of the West is a fictional character created by L. Frank Baum as the most significant antagonist in his classic children's novel "The Wonderful Wizard of Oz" (1900).  In Baum's subsequent "Oz" novels, it is the Nome King who is the principal villain; the Wicked Witch of the West is rarely even referred to again after her death in the first book.
  Title: Winkie Country
  Passage: The Winkie Country is the Western region of the fictional Land of Oz in L. Frank Baum's classic series of Oz books, first introduced in "The Wonderful Wizard of Oz" (1900).  The Winkie Country is in the West, noted by later being ruled by the Wicked Witch of the West.  This quadrant is strictly distinguished by the color yellow.  This color is worn by most of the native inhabitants called the Winkies and predominates in the local surroundings.  The Winkies are relatively normal in appearance with the exception of their yellow-tinted skin.  Tin abounds there and it is said that the Winkies are some of the most skillful tinsmiths in the world.  This was the country once ruled by the malevolent Wicked Witch of the West before Dorothy Gale "melted" her with a bucket of water, as narrated in "The Wonderful Wizard of Oz".  After that, the Winkies asked the Tin Woodman to be their new monarch ruler which he gladly accepted.  He now lives in a vast palace made of tin that his loyal subjects built in his honor as a present for their new tin King.
  Title: Out of Oz
  Passage: Out of Oz is the fourth and final novel in Gregory Maguire's "The Wicked Years" and was released on November 1, 2011.  "Out of Oz" brings a conclusion to the narratives spread across "The Wicked Years" while providing a revisionist look at L. Frank Baum's Land of Oz incorporating elements from Baum's series as well as the 1939 film adaptation of the original novel.  This novel presents an Oz in the middle of a civil war plagued with depression and adult situations, from the perspective of Rain, the young granddaughter of Elphaba Thropp, Maguire's reimagining of The Wicked Witch of the West.
  Title: Zelena (Once Upon a Time)
  Passage: Zelena, also known as the Wicked Witch of the West, is a fictional character in ABC's television series "Once Upon a Time".  She is portrayed by Rebecca Mader and was first introduced in the second half of the third season, serving as the new main antagonist.  After making recurring appearances in both the third and fourth seasons, Mader was promoted to series regular for the fifth and sixth seasons and was the fifth season's secondary antagonist in the first half.
citations: Wicked Witch of the West Zelena (Once Upon a Time)