instruction:
Generate a correct and concise answer for the question based on the words in the context.
question:
Context : Used by the U.S. Army, the U.S. Marine Corps, as well as many foreign militaries, the M47 Dragon was first fielded in January 1975 to U.S. Army soldiers stationed in mainland Europe.
Question : What year did M47 Dragon come into use?
answer:
1975

question:
Context : George W. George died of Parkinson's disease in Manhattan on November 7, 2007.
Question : What medical condition did George W. George have at the end of his life?
answer:
Parkinson's disease

question:
Context : General Sir Alexander Frank Philip Christison, 4th Baronet GBE, CB, DSO, MC & Bar (17 November 1893 -- 21 December 1993) was a British Army commander of the Second World War.
Question : What army did Philip Christison serve in?
answer:
British Army