You will be given a passage, and your task is to generate a Yes/No question that is answerable based on the given passage.

Example input: Powdered sugar, also called confectioners' sugar, icing sugar, and icing cake, is a finely ground sugar produced by milling granulated sugar into a powdered state. It usually contains a small amount of anti-caking agent to prevent clumping and improve flow. Although most often produced in a factory, powdered sugar can also be made by processing ordinary granulated sugar in a coffee grinder, or by crushing it by hand in a mortar and pestle.
Example output: is confectionary sugar the same as powdered sugar?
Example explanation: The question is a yes/no question, and it is answerable based on the given passage.
Q: A Song of Ice and Fire is a series of epic fantasy novels by the American novelist and screenwriter George R.R. Martin. He began the first volume of the series, A Game of Thrones, in 1991, and it was published in 1996. Martin, who initially envisioned the series as a trilogy, has published five out of a planned seven volumes. The fifth and most recent volume of the series published in 2011, A Dance with Dragons, took Martin six years to write. He is still writing the sixth novel, The Winds of Winter.
A:
is the game of thrones book series over?