Complex sentence: The Ohio Union building, opened in 1951, is scheduled to be replaced by a new building, with construction/demolition set to begin in 2007 and be finished for the 2010 school year.
Split into simpler sentences: The Ohio Union building, opened in 1951, is in the process of being replaced by a new building. Construction/demolition began in 2007 and the new building is scheduled to be finished for the 2010 school year.