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

[Q]: Sentence: 'a city street at dusk time with traffic'. Replace the letter 'i' with 'm' in the sentence.
[A]: a cmty street at dusk tmme wmth traffmc

[Q]: Sentence: 'a man sitting in a chair with a laptop in his lap'. Replace the letter 'p' with 'v' in the sentence.
[A]: a man sitting in a chair with a lavtov in his lav

[Q]: Sentence: 'some tracks for a rail way system near a building'. Replace the letter 'a' with 'h' in the sentence.
[A]:
some trhcks for h rhil why system nehr h building