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

Example Input: Sentence: 'stone and white colored structure in front of white modern building'. Replace the letter 'r' with 'p' in the sentence.
Example Output: stone and white coloped stpuctupe in fpont of white modepn building

Example Input: Sentence: 'a kitchen with open style cabinets and a counter full of liquor bottles'. Replace the letter 't' with 'p' in the sentence.
Example Output: a kipchen wiph open spyle cabineps and a counper full of liquor bopples

Example Input: Sentence: 'three dogs standing beside a boat in a body of water'. Replace the letter 'r' with 'v' in the sentence.
Example Output:
thvee dogs standing beside a boat in a body of watev