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

Input: Consider Input: Sentence: 'a person on a surfboard riding in ocean waves'. Replace the letter 's' with 'g' in the sentence.

Output: a pergon on a gurfboard riding in ocean waveg

Input: Consider Input: Sentence: 'a house cat standing in front of television'. Replace the letter 'n' with 'p' in the sentence.

Output: a house cat stapdipg ip fropt of televisiop

Input: Consider Input: Sentence: 'the top of a church showing steeples and windows'. Replace the letter 's' with 'v' in the sentence.
Output: the top of a church vhowing vteeplev and windowv