Complex sentence: Riverbend has built an additional 4,100 seat pavilion, The National City Pavilion, adjacent to the current box office and opened on May 24,2008 with Cincinnati's Over the Rhine.
Split into simpler sentences: Riverbend has built an additional 4,100 seat pavilion, The National City Pavilion, adjacent to the current box office. The pavilion opened on May 24,2008 with Cincinnati's Over the Rhine.