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 black velvety chair with chrome colored frame'. Replace the letter 'a' with 'z' in the sentence.
z blzck velvety chzir with chrome colored frzme

Sentence: 'a modern kitchen with an old black cook stove'. Replace the letter 'l' with 'f' in the sentence.

a modern kitchen with an ofd bfack cook stove