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

[Q]: Sentence: 'a street pole stating three different street names and numbers'. Replace the letter 'm' with 't' in the sentence.
[A]: a street pole stating three different street nates and nutbers

[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: 'the medicine cabinet, shelf and light fixture in an old bathroom'. Replace the letter 'a' with 'b' in the sentence.
[A]:
the medicine cbbinet, shelf bnd light fixture in bn old bbthroom