Question: For how many seasons did the series in which Courtney Thorne-Smith played Lyndsey McElroy run ?
Sentence (from "Courtney Thorne-Smith"): She is best known for her roles as Alison Parker on "Melrose Place", Georgia Thomas on "Ally McBeal", Cheryl in "According to Jim", and her recurring role on "Two and a Half Men" as Lyndsey McElroy.
Relevant evidence: Yes