Complex sentence: The Columbus Metropolitan Statistical Area (MSA), which encompasses a massive ten county area, is the third largest metropolitan area in Ohio, virtually tied with the Cleveland MSA and only slightly behind the Cincinnati MSA (which includes portions of Kentucky and Indiana).
Split into simpler sentences: The Columbus Metropolitan Statistical Area (MSA), which encompasses a massive ten county area. Under the traditional Metropolitan Statistical Area (MSA) model, it is the third largest metropolitan area in Ohio, virtually tied with the Cleveland MSA and only slightly behind the Cincinnati MSA (which includes portions of Kentucky and Indiana).