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

Example Input: Sentence: 'people are standing outside in the parking lot'. Replace the letter 'i' with 'z' in the sentence.
Example Output: people are standzng outszde zn the parkzng lot

Example Input: Sentence: 'bananas, oranges and apples are in shades of yellow and orange'. Replace the letter 'r' with 'b' in the sentence.
Example Output: bananas, obanges and apples abe in shades of yellow and obange

Example Input: Sentence: 'a black and white cat laying on a remote control'. Replace the letter 'i' with 'k' in the sentence.
Example Output:
a black and whkte cat laykng on a remote control