premise: Raven-Symoné plays the role of the protagonist, Olivia.
hypothesis: Raven-Symoné . She first appeared on television in 1989 on The Cosby Show as Olivia Kendall . In 2015 , Raven-Symoné joined the cast of the new hit primetime drama Empire in the recurring role of Olivia , the vengeful ex-wife of one of the main characters .