Complex sentence: Composed of one central building, which, along with the original gym, was completed in 1919 at a total cost of $285,000, the building features brick walls, a slate roof and other stone features.
Split into simpler sentences: Composed of one central building, which, along with the original gym, was completed in 1919 at a total cost of $285,000. The building features brick walls, a slate roof and other stone features.