Complex sentence: Roman served as the Mayor of the Town of Markham, Ontario from 1970 to 1984, Chair of the Regional Municipality of York in 1984, and independent Member of Parliament (MP) for the riding of York North from 1984 to 1988.
Split into simpler sentences: Roman served as the Mayor of the Town of Markham, Ontario from 1970 to 1984, Chair of the Regional Municipality of York in 1984. In 1984 Roman was elected as an independent Member of Parliament (MP) for the riding of York North from 1984 to 1988.