Simplify the following text for a Grade 7 native English-speaking person.
Original: The Fresh Prince of Bel-Air is an American television sitcom that originally aired on NBC from September 10 , 1990 to May 20 , 1996 .
Simplified: The Fresh Prince of Bel-Air was a popular American television series . It was a sitcom that aired on NBC from September 10 , 1990 , to May 20 , 1996 .