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

Input: Consider Input: Sentence: 'a giraffe standing alone with a low fence behind it'. Replace the letter 't' with 'o' in the sentence.

Output: a giraffe soanding alone wioh a low fence behind io

Input: Consider Input: Sentence: 'kites flying over a woman wearing a hat'. Replace the letter 'i' with 'j' in the sentence.

Output: kjtes flyjng over a woman wearjng a hat

Input: Consider Input: Sentence: 'a man flying a kite in an open field'. Replace the letter 'k' with 'i' in the sentence.
Output: a man flying a iite in an open field