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

Input: Consider Input: Sentence: 'a girl sitting in a chair eating a slice of pizza'. Replace the letter 'i' with 'x' in the sentence.

Output: a gxrl sxttxng xn a chaxr eatxng a slxce of pxzza

Input: Consider Input: Sentence: 'a person is riding a skateboard in a skateboard park'. Replace the letter 'a' with 'o' in the sentence.

Output: o person is riding o skoteboord in o skoteboord pork

Input: Consider Input: Sentence: 'a little kid that is eating an apple'. Replace the letter 'p' with 'j' in the sentence.
Output: a little kid that is eating an ajjle