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

Example Input: Sentence: 'a bride and a groom look ridiculous as they stuff cake into each other's mouth'. Replace the letter 'd' with 's' in the sentence.
Example Output: a brise ans a groom look risiculous as they stuff cake into each other's mouth

Example Input: Sentence: 'a man holds his hands out in pursuit of a disk'. Replace the letter 'n' with 'o' in the sentence.
Example Output: a mao holds his haods out io pursuit of a disk

Example Input: Sentence: 'a stop sign at a corner of a town'. Replace the letter 't' with 'e' in the sentence.
Example Output:
a seop sign ae a corner of a eown