Question: In what year did this pilot episode air of this American animated television series, whose title character held the same name as the show and also included the character Mrs. Puff?
{'answer': 'May 1, 1999', 'supporting_facts': [['Mrs. Puff', 0], ['SpongeBob SquarePants (character)', 0], ['SpongeBob SquarePants (character)', 1]]}