Complex sentence: James Kenneth "Jim" Hahn (born July 3,1950) is an American politician from the Democratic Party, best known for having served a single term as the 40th mayor of the city of Los Angeles, California.
Split into simpler sentences: James Kenneth "Jim" Hahn (born July 3,1950) is an American politician. He is known for having served a single term as the 40th mayor of the city of Los Angeles, California.