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

Example Input: Sentence: 'a child holding a tv remote like a phone'. Replace the letter 'i' with 'b' in the sentence.
Example Output: a chbld holdbng a tv remote lbke a phone

Example Input: Sentence: 'black and white image of a tattoo and piercing sign in a city'. Replace the letter 'e' with 'h' in the sentence.
Example Output: black and whith imagh of a tattoo and pihrcing sign in a city

Example Input: Sentence: 'a delivery van and a passenger buss drive down a street in a city'. Replace the letter 'y' with 'k' in the sentence.
Example Output:
a deliverk van and a passenger buss drive down a street in a citk