What studies can show that robots' efficiency could be decreased if it is not charged or rested properly and adequately?

the answer should be:

the intervention of the supernatural gives gilgamesh hope that he will defeat humbaba.

- a.) the man dies after he is unable to keep a fire lit.

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it ends with a marriage, but also with prospero giving up his power.

the tempest is a play written by william shakespeare between 1610-1611, it narrates the story of prospero a magician that sets a storm to wreck a ship, this sets the story to kill the king of naples. while it is a romantic style play, it isn´t traditional because of the ending, it end with the marriage and the magician giving up his powers.