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

Example Input: Sentence: 'it pays a cat to be suspicious of what your owner tries to feed you'. Replace the letter 'o' with 'g' in the sentence.
Example Output: it pays a cat tg be suspicigus gf what ygur gwner tries tg feed ygu

Example Input: Sentence: 'a large elephant standing outside beside a tree'. Replace the letter 'e' with 'y' in the sentence.
Example Output: a largy ylyphant standing outsidy bysidy a tryy

Example Input: Sentence: 'a boat sitting in the water at a beach with people swimming'. Replace the letter 'g' with 'h' in the sentence.
Example Output:
a boat sittinh in the water at a beach with people swimminh