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

[Q]: Sentence: 'a train traveling through a dark tunnel next to green brush.'. Replace the letter 'r' with 'e' in the sentence.
[A]: a teain teaveling theough a daek tunnel next to geeen beush.


[Q]: Sentence: 'a bunch of signs on a pole on the street'. Replace the letter 'c' with 's' in the sentence.
[A]: a bunsh of signs on a pole on the street


[Q]: Sentence: 'this is a seafood platter with lobster and corn on the cob'. Replace the letter 't' with 'z' in the sentence.
[A]:
zhis is a seafood plazzer wizh lobszer and corn on zhe cob