You will be given a definition of a task first, then some input of the task.
Generate a correct and concise answer for the question based on the words in the context.

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 disease caused the death of Daniel Kish?
Output:
blindness