Question: Who plays the Wicked Witch of the West on ABC's "Once Upon a time" inspired by the novel by L. Frank Baum?
Sentence (from "Wicked Witch of the West"): 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).
Relevant evidence: Yes