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

Sentence: 'a person and a dog are on a bench'. Replace the letter 'e' with 'r' in the sentence.
a prrson and a dog arr on a brnch

Sentence: 'a bike sitting parked next to a cart in front of some boxes'. Replace the letter 't' with 'x' in the sentence.
a bike sixxing parked nexx xo a carx in fronx of some boxes

Sentence: 'three bananas and two apples in a bowl'. Replace the letter 'p' with 'b' in the sentence.

three bananas and two abbles in a bowl