In this task, you need to replace a letter in the sentence with another given letter.

Q: Sentence: 'a building has a clock on the top of it'. Replace the letter 'l' with 'x' in the sentence.

A: a buixding has a cxock on the top of it
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Q: Sentence: 'people walk through a local fruit market in a city'. Replace the letter 'e' with 'n' in the sentence.

A: pnopln walk through a local fruit marknt in a city
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Q: Sentence: 'three elephants headed toward a watering hole with trees and brush in the back ground'. Replace the letter 'o' with 'b' in the sentence.

A:
three elephants headed tbward a watering hble with trees and brush in the back grbund
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