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

Example Input: Sentence: 'a black velvety chair with chrome colored frame'. Replace the letter 'a' with 'z' in the sentence.
Example Output: z blzck velvety chzir with chrome colored frzme

Example Input: Sentence: 'a close shot of a stop sign near a building'. Replace the letter 'b' with 'u' in the sentence.
Example Output: a close shot of a stop sign near a uuilding

Example Input: Sentence: 'the plate of french toast has fruit on it'. Replace the letter 'h' with 'y' in the sentence.
Example Output:
tye plate of frency toast yas fruit on it