Complex sentence: The current mayor of Rennes is Daniel Delaveau, a member of the Socialist Party who replaced retiring Socialist incumbent Edmond Hervé, in office from 1977 to 2008.
Split into simpler sentences: The current mayor of Rennes is Daniel Delaveau. A member of the Socialist Party, he replaced retiring Socialist incumbent Edmond Hervé, in office from 1977 to 2008.