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

Input: Consider Input: Sentence: 'a child taking the paper off a box sitting on the floor'. Replace the letter 'c' with 'b' in the sentence.

Output: a bhild taking the paper off a box sitting on the floor

Input: Consider Input: Sentence: 'a busy intersection with cars moving at night'. Replace the letter 's' with 'f' in the sentence.

Output: a bufy interfection with carf moving at night

Input: Consider Input: Sentence: 'a man with glasses standing with a cell phone in his hand on a bridge'. Replace the letter 'e' with 'x' in the sentence.
Output: a man with glassxs standing with a cxll phonx in his hand on a bridgx