Question: What does the creator of the television series that ran on Teletoon in Canada and on Nickelodeon in Australia (2002 to 2003) co-own with Sandra Walters?
Sentence (from "Yakkity Yak"): Yakkity Yak is an Australian–Canadian animated television series created by Mark Gravas that ran on Teletoon in Canada and on Nickelodeon in Australia from November 9, 2002 to December 12, 2003.
Relevant evidence: Yes