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

Q: Sentence: 'a train moving on a track during the day'. Replace the letter 't' with 'q' in the sentence.

A: a qrain moving on a qrack during qhe day
****
Q: Sentence: 'a waterview with multiple boats in the water'. Replace the letter 'r' with 'w' in the sentence.

A: a watewview with multiple boats in the watew
****
Q: Sentence: 'fire hydrant on sidewalk and street just behind it'. Replace the letter 'r' with 'q' in the sentence.

A:
fiqe hydqant on sidewalk and stqeet just behind it
****