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

Input: Consider Input: Sentence: 'there are peoople standign next to a bike'. Replace the letter 'o' with 't' in the sentence.

Output: there are pettple standign next tt a bike

Input: Consider Input: Sentence: 'a lonley giraffe is making a trek in the wild'. Replace the letter 'r' with 'h' in the sentence.

Output: a lonley gihaffe is making a thek in the wild

Input: Consider Input: Sentence: 'it looks as though everything is covered with ice and snow'. Replace the letter 'o' with 'b' in the sentence.
Output: it lbbks as thbugh everything is cbvered with ice and snbw