Complex sentence: In the twentieth century the library purpose gradually took over the building After period of structural deterioration, and following extensive restoration work, the buildings were re-opened entirely as Shrewsbury Public Library in 1983.
Split into simpler sentences: In the twentieth century the library purpose gradually took over the building. After a period of structural deterioration, followed by extensive restoration work, the buildings were re-opened entirely as Shrewsbury Public Library in 1983.