Sentence:  Dr. Wilson C. Grant , of the <WSD>Veterans</WSD> ' Administration Hospital , Coral Gables , Florida , and the University of Miami School of Medicine , set out to discover if avocados , because of their high content of unsaturated fatty acids , would reduce the cholesterol of the blood in selected patients . 
Meaning of the word marked with <WSD> tags:  any number of entities (members) considered as a unit