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

SOLUTION: a brise ans a groom look risiculous as they stuff cake into each other's mouth

PROBLEM: Sentence: 'street signs hanging next to a traffic light on a city street'. Replace the letter 'g' with 'm' in the sentence.

SOLUTION: street simns hanminm next to a traffic limht on a city street

PROBLEM: Sentence: 'a toilet with a black cabinet and shelf above it'. Replace the letter 'a' with 'f' in the sentence.

SOLUTION:
f toilet with f blfck cfbinet fnd shelf fbove it