Generate a correct and concise answer for the question based on the words in the context.
--------
Question: Context : Hans Seyffer, also known as Hans Seyfer or Hans of Heilbronn (c.1460--1509), was a stone sculptor and wood carver of the late Gothic style. 
Question : On what date did Hans Seyffer expire?

Answer: 1509


Question: Context : Harriet Wheeler (born 26 June 1963) is an English singer and songwriter, best known as the lead singer of the 1980s/1990s alternative rock band, The Sundays. 
Question : What was Harriet Wheeler's career?

Answer: singer


Question: 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 was a factor in the death of Daniel Kish?

Answer:
blindness