sentences:  Hanna-Barbera first approached MGM to distribute their cartoons for television, but were turned down.Columbia Pictures' picked up Hanna-Barbera's product, and the studio soon became the most successful producers of television animation in the world.MGM would later have Gene Deitch create a series of "Tom and Jerry" cartoons before contracting Chuck Jones and Les Goldman's Sib Tower 12 studio to create more "Tom and Jerry" shorts.