Question: Who was the director of the 2017 two-part British television drama starring the actress who played Yara Greyjoy in "Game of Thrones"?
Sentence (from "Gemma Whelan"): Gemma Elizabeth Whelan (born 23 April 1981) is an English actress and comedian, known for playing Yara Greyjoy in the HBO fantasy-drama series "Game of Thrones".
Relevant evidence: Yes