Complex sentence: Sir Anthony Keck (1630--December 1695) was a British lawyer and politician; he was a member of Parliament between 1691 and 1695, and briefly Commissioner of the Great Seal.
Split into simpler sentences: Sir Anthony Keck (1630--December 1695) was a British lawyer and politician. He was a member of Parliament between 1691 and 1695, and briefly Commissioner of the Great Seal.