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

Input: Consider Input: Sentence: 'the bus is trying to navigate though the london traffic'. Replace the letter 'a' with 'l' in the sentence.

Output: the bus is trying to nlviglte though the london trlffic


Input: Consider Input: Sentence: 'there is a purse on the floor with its contents spilled out'. Replace the letter 'd' with 'v' in the sentence.

Output: there is a purse on the floor with its contents spillev out


Input: Consider Input: Sentence: 'a hefty red truck on a rural street'. Replace the letter 'r' with 'p' in the sentence.


Output: a hefty ped tpuck on a pupal stpeet