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

Sentence: 'a group of elephants near a body of water'. Replace the letter 'a' with 'q' in the sentence.
q group of elephqnts neqr q body of wqter

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

Sentence: 'a blue street sign with the words merton st. is next to a white piece of artwork'. Replace the letter 'b' with 'f' in the sentence.

a flue street sign with the words merton st. is next to a white piece of artwork