Generate a correct and concise answer for the question based on the words in the context.

Q: Context : Nancy Talbot died from complications of Alzheimer's disease on August 30, 2009, at her home in Boulder, Colorado, at the age of 89. 
Question : What led to Nancy Talbot's death?

A: Alzheimer's disease
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Q: Context : Major General Courtney Whitney (May 20, 1897 - March 21, 1969) was an American lawyer and Army commander during World War II who later served as a senior official during the occupation of Japan. 
Question : Which conflict was Courtney Whitney a part of?

A: World War II
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Q: Context : The Thames-class lifeboat was operated by the Royal National Lifeboat Institution (RNLI) from its stations around the coasts of the United Kingdom between 1974 and 1997. 
Question : What year was Thames-class lifeboat introduced?

A:
1974
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