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

Example Input: Sentence: 'a small plastic dish with food in it'. Replace the letter 'p' with 'g' in the sentence.
Example Output: a small glastic dish with food in it

Example Input: Sentence: 'a bathroom with a tub connected to a pool with some sinks inside'. Replace the letter 'e' with 'b' in the sentence.
Example Output: a bathroom with a tub connbctbd to a pool with somb sinks insidb

Example Input: Sentence: 'a yellow fire hydrant is placed around the green trees'. Replace the letter 'r' with 'i' in the sentence.
Example Output:
a yellow fiie hydiant is placed aiound the gieen tiees