Complex sentence: Christopher T. Carley is the chairman of the Fordham Company, Chicago development once known for it's involvement in the proposed Chicago Spire, a 2,000 foot condominium tower designed by Santiago Calatrava.
Split into simpler sentences: Christopher T. Carley is the chairman of the Fordham Company, a Chicago real estate development firm. Carley was also once known for his involvement in the proposed Chicago Spire, a 2,000 foot condominium tower designed by Santiago Calatrava.