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

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: 'there is a piece of a cake on the plate and a cup of drink'. Replace the letter 'r' with 'u' in the sentence.
Example Output: theue is a piece of a cake on the plate and a cup of duink

Example Input: Sentence: 'a train with a graffiti covered train car sitting next to grass'. Replace the letter 'n' with 'y' in the sentence.
Example Output:
a traiy with a graffiti covered traiy car sittiyg yext to grass