TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a skier in the midst of a jump'. Replace the letter 'm' with 'd' in the sentence.

SOLUTION: a skier in the didst of a judp

PROBLEM: Sentence: 'a group of people play a video game in a living room'. Replace the letter 'p' with 'u' in the sentence.

SOLUTION: a grouu of ueoule ulay a video game in a living room

PROBLEM: Sentence: 'a line of bikers sit on their motorcycles'. Replace the letter 'e' with 'q' in the sentence.

SOLUTION:
a linq of bikqrs sit on thqir motorcyclqs