Sentence:  "This shocking report proves once again that we urgently need a radical shake-up of hospital care," said Jeremy Hughes, <WSD>chief executive</WSD> of the Alzheimer's Society. "Given that people with dementia occupy a quarter of hospital beds and that many leave in worse health than when they were admitted, it is unacceptable that training in dementia care is not the norm." 
Meaning of the word marked with <WSD> tags:  Chief executive officer.