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

Input: Consider Input: Sentence: 'a herd of black cattle grazing and lounging in a green field'. Replace the letter 'a' with 'q' in the sentence.

Output: q herd of blqck cqttle grqzing qnd lounging in q green field


Input: Consider Input: Sentence: 'a child holding a tv remote like a phone'. Replace the letter 'i' with 'b' in the sentence.

Output: a chbld holdbng a tv remote lbke a phone


Input: Consider Input: Sentence: 'a man holding onto a donut while using a cell phone'. Replace the letter 'u' with 'l' in the sentence.


Output: a man holding onto a donlt while lsing a cell phone