Task: Explanation
Input (English): SpongeBob SquarePants is the titular character and protagonist of the American animated television series of the same name. He is voiced by actor and comedian Tom Kenny and first appeared on television in the series' pilot episode on May 1, 1999. 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
Output (English):  He is voiced by actor and comedian Tom Kenny and first appeared on television in the series pilot episode on May 1, 1999.