Complex sentence: Mary Ellen Miller (born December 30,1952) is an American art historian and academician specialized in Mesoamerica and the Mayas, and the Dean of Yale College from 2008 to June 2014.
Split into simpler sentences: Mary Ellen Miller (born December 30,1952) is an American art historian and academician specialized in Mesoamerica and the Mayas. She was Dean of Yale College from 2008 to June 2014.