Simplify the following text for a Grade 11 native English-speaking person.
Original: Turner Classic Movies ( TCM ) is a movie-oriented cable television channel , owned by the Turner Broadcasting System subsidiary of Time Warner , featuring commercial-free classic movies , mostly from the Turner Entertainment and MGM , United Artists , RKO and Warner Bros. film libraries .
Simplified: Turner Classic Movies ( TCM ) is a cable television channel featuring commercial-free classic movies , mostly from the Turner Entertainment and Warner Bros. film libraries , which include many MGM , United Artists , RKO and Warner Bros. titles .