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

Input: Consider Input: Sentence: 'a baseball player running to third base from second'. Replace the letter 'a' with 'u' in the sentence.

Output: u busebull pluyer running to third buse from second


Input: Consider Input: Sentence: 'a group of young adults are engaged in outdoor exercise'. Replace the letter 'g' with 'n' in the sentence.

Output: a nroup of younn adults are ennaned in outdoor exercise


Input: Consider Input: Sentence: 'two tall giraffes standing next to each other in the daytime'. Replace the letter 'r' with 'a' in the sentence.


Output: two tall giaaffes standing next to each othea in the daytime