Question: What is the name of the dark wizard in the fantasy series by Joanne Rowling?
Sentence (from "J. K. Rowling"): Joanne Rowling, {'1': ", '2': ", '3': ", '4': "} ( ; born 31 July 1965), who writes under the pen names J. K. Rowling and Robert Galbraith, is a British novelist and screenwriter who wrote the "Harry Potter" fantasy series.
Relevant evidence: Yes