instruction:
Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.
question:
What is the SI Unit of Luminous Intensity?
answer:
candela


question:
Who wrote the poem 'The Lady of the Lake'?
answer:
walter scott


question:
What book was published by Florence Nightingale in 1860?
answer:

notes on nursing