Complex sentence: He is a prominent character in the first book of Martin's award-winning "A Song of Ice and Fire" series, and is portrayed by Sean Bean in the first season of HBO's adaptation of the series, "Game of Thrones".
Split into simpler sentences: He is a prominent character in the first book of Martin's award-winning "A Song of Ice and Fire" series. Ned is portrayed by Sean Bean in the first season of HBO's adaptation of the series, "Game of Thrones".