In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

[Q]: The lumen (symbol: lm) is the SI derived unit of luminous flux, a measure of the total quantity of visible light emitted by a source. Luminous flux differs from power (radiant flux) in that radiant flux includes all electromagnetic waves emitted, while luminous flux is weighted according to a model (a 'luminosity function') of the human eye's sensitivity to various wavelengths. Lumens are related to lux in that one lux is one lumen per square meter.
[A]: what is the difference between lux and lumens


[Q]: A teenager wakes up inside an underground elevator with no memory of his identity. A group of male youths greet him in a large grassy area called the 'Glade' enclosed by tall stone walls. The boys ('Gladers') have formed a rudimentary society, with each assuming specialized tasks. Their leader, Alby, says that every boy eventually recalls his name but not his past. The boy learns that a vast Maze surrounding them may be the only way out. During the day, designated Runners search the Maze for an escape route, returning before nightfall when the entrance closes. No one has ever survived a night in the Maze.
[A]: what is a runner in the maze runner


[Q]: The Indian Rebellion of 1857 was a major uprising in India during 1857 -- 58 against the rule of the British East India Company, which functioned as a sovereign power on behalf of the British Crown. The event is known by many names, including the Sepoy Mutiny, the Indian Mutiny, the Great Rebellion, the Revolt of 1857, the Indian Insurrection, and India's First War of Independence.
[A]:
why was revolt of 1857 known as first war of independence