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

Sentence: 'a man walking a horse on a dirt track'. Replace the letter 't' with 's' in the sentence.
a man walking a horse on a dirs srack

Sentence: 'a man in black shirt laying on bed with a teddy bear'. Replace the letter 'd' with 'b' in the sentence.
a man in black shirt laying on beb with a tebby bear

Sentence: 'a stuffed bear sitting in a chair with napkins and cup'. Replace the letter 'e' with 'l' in the sentence.

a stuffld blar sitting in a chair with napkins and cup