Complex sentence: Thomas Gill, formally Thomas Ponce Gill (April 21,1922--June 3,2009), a Democrat, served in the United States Congress from 1963 to 1965 and was Lieutenant Governor of Hawai'i from 1966 to 1970.
Split into simpler sentences: Thomas Gill, formally Thomas Ponce Gill (April 21,1922--June 3,2009), was a Hawaii politician. A member of the Democratic party, he served in the United States Congress from 1963 to 1965 and was Lieutenant Governor of Hawaii from 1966 to 1970.