TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a group of people are using their laptops in the dark'. Replace the letter 'p' with 'b' in the sentence.

SOLUTION: a groub of beoble are using their labtobs in the dark

PROBLEM: Sentence: 'a plate topped with a bacon and broccoli salad'. Replace the letter 'o' with 't' in the sentence.

SOLUTION: a plate ttpped with a bactn and brtcctli salad

PROBLEM: Sentence: 'a bathroom with a floor toilet, seat and sink'. Replace the letter 'o' with 't' in the sentence.

SOLUTION:
a bathrttm with a flttr ttilet, seat and sink