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

Sentence: 'two people are passing a man playing a piano on the street'. Replace the letter 'o' with 'i' in the sentence.
twi peiple are passing a man playing a piani in the street

Sentence: 'two children who are standing next to a white fire hydrant'. Replace the letter 't' with 'r' in the sentence.
rwo children who are sranding nexr ro a whire fire hydranr

Sentence: 'a red stop sign sitting on the side of a road'. Replace the letter 'o' with 'i' in the sentence.

a red stip sign sitting in the side if a riad