Task: Question Generation
Input (English): Context : In October 2014, Harvest Rain Theatre Company under the direction of producer Tim O'Connor staged a production of Spamalot with a cast list including Jon English as King Arthur, Simon Gallaher as Patsy, Julie Anthony as The Lady Of The Lake, and Frank Woodley as Sir Robin. 
Subject : Spamalot 
Relation : based on
Output (English): Which is the basis of Spamalot?