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

Example Input: Sentence: 'a house cat standing in front of television'. Replace the letter 'n' with 'p' in the sentence.
Example Output: a house cat stapdipg ip fropt of televisiop

Example Input: Sentence: 'the color theme in this kitchen is red and black'. Replace the letter 't' with 'v' in the sentence.
Example Output: vhe color vheme in vhis kivchen is red and black

Example Input: Sentence: 'a man riding  skateboard into the air'. Replace the letter 'a' with 'e' in the sentence.
Example Output:
e men riding  sketeboerd into the eir