Complex sentence: Ellen O'Kane Tauscher (born November 15,1951) is an American politician and a Democratic member of the United States House of Representatives since 1997, representing California's 10th congressional district.
Split into simpler sentences: Ellen O'Kane Tauscher (born November 15,1951) is an American politician. She has been a Democratic member of the United States House of Representatives since 1997, representing California's 10th congressional district.