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

Input: Consider Input: Sentence: 'a train traveling through a dark tunnel next to green brush.'. Replace the letter 'r' with 'e' in the sentence.

Output: a teain teaveling theough a daek tunnel next to geeen beush.


Input: Consider Input: Sentence: 'a woman is snowboarding down a snowy hill'. Replace the letter 'l' with 'b' in the sentence.

Output: a woman is snowboarding down a snowy hibb


Input: Consider Input: Sentence: 'man wearing a red hat riding a motorized bicycle'. Replace the letter 'n' with 'q' in the sentence.


Output: maq weariqg a red hat ridiqg a motorized bicycle