instruction:
Generate a correct and concise answer for the question based on the words in the context.
question:
Context : Otto Preminger died in New York City, New York in 1986, aged 80, from lung cancer while suffering from Alzheimer's disease. 
Question : What medical condition did Otto Preminger have at the end of his life?
answer:
Alzheimer's disease


question:
Context : USS George M. Campbell (DE-773) was a United States Navy Cannon-class destroyer escort proposed during World War II but never completed. 
Question : What specific type of seafaring vessel was USS George M. Campbell (DE-773)?
answer:
Cannon-class destroyer escort


question:
Context : Sally Grosvenor, Duchess of Westminster, née Perry (1909 -- 30 May 1990), was the wife of Gerald Grosvenor, 4th Duke of Westminster. 
Question : What is Sally Grosvenor, Duchess of Westminster's spouse's name?
answer:

Gerald Grosvenor, 4th Duke of Westminster