In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'the people are in the library working and studying'. Replace the letter 'r' with 'g' in the sentence.

Answer: the people age in the libgagy wogking and studying

Question: Sentence: 'two children who are standing next to a white fire hydrant'. Replace the letter 't' with 'r' in the sentence.

Answer: rwo children who are sranding nexr ro a whire fire hydranr

Question: Sentence: 'a row of lawn chairs with umbrellas over them'. Replace the letter 'e' with 'x' in the sentence.

Answer:
a row of lawn chairs with umbrxllas ovxr thxm