Complex sentence: Joint Stock Theatre Company, arguably the leading innovative touring company at that time, brought two productions to the Fringe-The Great Celestial Cow by Sue Townsend and Fire in the Lake by Karim Alrawi.
Split into simpler sentences: Joint Stock Theatre Company, arguably the leading innovative touring company at that time, brought two productions to the Fringe. These were "The Great Celestial Cow" by Sue Townsend and "Fire in the Lake" by Karim Alrawi.