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

[EX Q]: Context : After twelve years of marriage, Hannah Van Buren contracted tuberculosis and died on February 5, 1819, at the age of thirty-five. 
Question : Which medical condition does Hannah Van Buren suffer from?
[EX A]: tuberculosis

[EX Q]: Context : The RPG-40 was an anti-tank hand grenade developed by the Soviet Union in 1940. 
Question : What year was the service entry date for RPG-40?
[EX A]: 1940

[EX Q]: Context : Daniel Kish (born 1966 in Montebello, California) is an American expert in human echolocation and President of World Access for the Blind, a non-profit founded in 2000 to facilitate ``the self-directed achievement of people with all forms of blindness'' and increase public awareness about their strengths and capabilities. 
Question : What medical condition was Daniel Kish suffering from?
[EX A]:
blindness