Task: Question Generation
Input (English): Context : The Humpty Dumpty Circus is an animated short film made in 1898 by director and producer J. Stuart Blackton and Albert E. Smith, the Anglo-American founders of Vitagraph Studios. 
Subject : The Humpty Dumpty Circus 
Relation : production company
Output (English): What production company was involved in The Humpty Dumpty Circus?