Question: The Scottish actor and author Robbie Coltrane is best known for this role in the "Harry Potter" films whose responsibility is the gamekeeper and Keeper of Keys and Grounds of what?
Sentence (from "Robbie Coltrane"): Robbie Coltrane, OBE (born Anthony Robert McMillan; 30 March 1950) is a Scottish actor and author.
Relevant evidence: Yes