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

Example Input: Sentence: 'a close up of a honey badger on the ground'. Replace the letter 'o' with 'g' in the sentence.
Example Output: a clgse up gf a hgney badger gn the grgund

Example Input: Sentence: 'bags of seeds with a pair of black scissors sitting on them'. Replace the letter 'b' with 'y' in the sentence.
Example Output: yags of seeds with a pair of ylack scissors sitting on them

Example Input: Sentence: 'a giraffe putting it's head over the side of a fence'. Replace the letter 'f' with 'z' in the sentence.
Example Output:
a girazze putting it's head over the side oz a zence