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

Input: Consider Input: Sentence: 'the cargo train is headed to the next destination'. Replace the letter 'h' with 'x' in the sentence.

Output: txe cargo train is xeaded to txe next destination


Input: Consider Input: Sentence: 'a man in black shirt laying on bed with a teddy bear'. Replace the letter 'd' with 'b' in the sentence.

Output: a man in black shirt laying on beb with a tebby bear


Input: Consider Input: Sentence: 'a large blue train on a steel track'. Replace the letter 'l' with 'p' in the sentence.


Output: a parge bpue train on a steep track