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

Example Input: Sentence: 'a man that is jumping a skateboard over something'. Replace the letter 'g' with 'j' in the sentence.
Example Output: a man that is jumpinj a skateboard over somethinj

Example Input: Sentence: 'a man is posing in a desert, leaning on a sign with an image of a camel on it'. Replace the letter 'i' with 'r' in the sentence.
Example Output: a man rs posrng rn a desert, leanrng on a srgn wrth an rmage of a camel on rt

Example Input: Sentence: 'a group of people on a motorcyle waiting for a train to pass over a road'. Replace the letter 'l' with 'h' in the sentence.
Example Output:
a group of peophe on a motorcyhe waiting for a train to pass over a road