Complex sentence: The complete renovation of the South Stand into a two-tier stand with an additional 4,000 seats and the subsequent demolition and reconstruction of a two-tier North Stand adding another 4,000 seats brought the total capacity of the ground to more than 30,000.
Split into simpler sentences: The complete renovation of the South Stand into a two-tier stand with added an additional 4,000 seats to the stadium. The subsequent demolition and reconstruction of a two-tier North Stand added a further 4,000 seats and brought the total capacity of the ground to more than 30,000.