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

Sentence: 'a couple of people that are petting a horse'. Replace the letter 'e' with 'p' in the sentence.
a couplp of ppoplp that arp pptting a horsp

Sentence: 'a woman is talking on her white phone'. Replace the letter 'w' with 'r' in the sentence.
a roman is talking on her rhite phone

Sentence: 'a man is squatting with a basketball in his hand'. Replace the letter 'w' with 'b' in the sentence.

a man is squatting bith a basketball in his hand