TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'young boy leaping into air with tennis racket with dog below him'. Replace the letter 't' with 'r' in the sentence.

SOLUTION: young boy leaping inro air wirh rennis racker wirh dog below him

PROBLEM: Sentence: 'a well dressed man standing near his early bicycle'. Replace the letter 'e' with 'd' in the sentence.

SOLUTION: a wdll drdssdd man standing ndar his darly bicycld

PROBLEM: Sentence: 'a woman looking to her left while standing under an umbrella'. Replace the letter 'n' with 'p' in the sentence.

SOLUTION:
a womap lookipg to her left while stapdipg upder ap umbrella