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

Example Input: Sentence: 'man holding pair of red handled scissor in front of face'. Replace the letter 'i' with 'f' in the sentence.
Example Output: man holdfng pafr of red handled scfssor fn front of face

Example Input: Sentence: 'the big sandwich features several different  colorful ingredients'. Replace the letter 'e' with 'o' in the sentence.
Example Output: tho big sandwich foaturos sovoral difforont  colorful ingrodionts

Example Input: Sentence: 'a small bird is in a pink cage'. Replace the letter 'g' with 'o' in the sentence.
Example Output:
a small bird is in a pink caoe