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

Input: Consider Input: Sentence: 'a group of people walking along a dirty snow covered road'. Replace the letter 'n' with 'i' in the sentence.

Output: a group of people walkiig aloig a dirty siow covered road


Input: Consider Input: Sentence: 'a person under an open umbrella in the sand'. Replace the letter 'd' with 'h' in the sentence.

Output: a person unher an open umbrella in the sanh


Input: Consider Input: Sentence: 'a tennis player bends over to retrieve a tennis ball'. Replace the letter 'n' with 'a' in the sentence.


Output: a teaais player beads over to retrieve a teaais ball