Complex sentence: In 2008, Union Bank made a substantial contribution to the Plaza--a six acre water theme park that runs along the waterway from O Street, North to R Street, between 21st and 22nd streets.
Split into simpler sentences: In 2008, Union Bank made a substantial contribution to the Plaza. The park is a six acre water theme park that runs along the waterway from O Street, North to R Street, between 21st and 22nd streets.