Complex sentence: Frost is known for playing the role of Betsy Stewart Andropoulos on the daytime soap opera "As The World Turns" from 1984 to 1988, a role which was previously played by actress Meg Ryan.
Split into simpler sentences: Frost is known for playing the role of Betsy Stewart Andropoulos on the daytime soap opera "As The World Turns" from 1984 to 1988. A role which was previously played by actress Meg Ryan.