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

[EX Q]: Sentence: 'a small bird perched on a open window'. Replace the letter 'e' with 'r' in the sentence.
[EX A]: a small bird prrchrd on a oprn window

[EX Q]: Sentence: 'a child taking the paper off a box sitting on the floor'. Replace the letter 'c' with 'b' in the sentence.
[EX A]: a bhild taking the paper off a box sitting on the floor

[EX Q]: Sentence: 'a man holding a tennis racket standing on a court'. Replace the letter 't' with 'r' in the sentence.
[EX A]:
a man holding a rennis racker sranding on a courr