Complex sentence: Edward William Proxmire (November 11,1915--December 15,2005) was a member of the Democratic Party, who served in the United States Senate for the state of Wisconsin from 1957 to 1989.
Split into simpler sentences: Edward William Proxmire (November 11,1915--December 15,2005) was an American politician. A member of the Democratic Party, he served as a United States Senator from Wisconsin from 1957 to 1989.