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

Input: Consider Input: Sentence: 'a bathroom with a white toilet next to a large window'. Replace the letter 'w' with 'x' in the sentence.

Output: a bathroom xith a xhite toilet next to a large xindox

Input: Consider Input: Sentence: 'a person on a snow board flying through the air'. Replace the letter 'f' with 'n' in the sentence.

Output: a person on a snow board nlying through the air

Input: Consider Input: Sentence: 'a man talking to a woman as she holds his neck tie'. Replace the letter 's' with 'b' in the sentence.
Output: a man talking to a woman ab bhe holdb hib neck tie