Original sentence: By 1979, La Toya and her sisters Rebbie and Janet formed a short-lived girl group
Edited sentence: (Viewable at YouTube by searching √By 1979, La Toya and her sisters  formed a short-lived girl group.In 1977, La Toya and her sisters Rebbie and Janet appeared in all the episodes of  the Jackson's TV series The Jacksons TV series on ABC.The main focus of the show was the Jackson brothers (the Jackson Five minus Germaine and plus Randy),but La Toya and her sisters sang and danced and acted in skits on the show, which lasted for twelve episodes