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

Example Input: Sentence: 'broccoli and cooked meat arranged on a plate'. Replace the letter 'c' with 'l' in the sentence.
Example Output: brolloli and looked meat arranged on a plate

Example Input: Sentence: 'a person who is looking at their cell phone'. Replace the letter 'o' with 'b' in the sentence.
Example Output: a persbn whb is lbbking at their cell phbne

Example Input: Sentence: 'a stop ight in a snowy street lights up'. Replace the letter 'h' with 'v' in the sentence.
Example Output:
a stop igvt in a snowy street ligvts up