Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Context : Hawkmistress! is a fantasy novel written by Marion Zimmer Bradley as part of the Darkover series and is set at the end of Ages of Chaos, in the period of Darkover's history known as the Hundred Kingdoms.
Answer : Darkover series
To which series does Hawkmistress! belong?