You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: BRITISH MONARCHS 
Clue: The last British king not named George, William or Edward was named this
james

Category: FOOD SCIENCE 
Clue: In 2002 Japanese scientists discovered it contains the enzyme Lachrymatory-Factor Synthase
onions

Category: 20th CENTURY AMERICANS 
Clue: At the dedication of a fountain at Radcliffe College in 1960, she began her speech with the single word "Water"

helen keller