Complex sentence: Prior to the creation of the National Health Service, the Infirmary depended heavily on the generosity of benefactors such as James Key Caird whose generosity provided the hospital with cancer and maternity facilities.
Split into simpler sentences: Prior to the creation of the National Health Service, the Infirmary depended heavily on the generosity of benefactors such as James Key Caird. Donations from Caird provided the hospital with cancer and maternity facilities.