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

[EX Q]: Sentence: 'a yellow fire hydrant sitting on the sidewalk'. Replace the letter 'o' with 'd' in the sentence.
[EX A]: a yelldw fire hydrant sitting dn the sidewalk

[EX Q]: Sentence: 'kites flying over a woman wearing a hat'. Replace the letter 'i' with 'j' in the sentence.
[EX A]: kjtes flyjng over a woman wearjng a hat

[EX Q]: Sentence: 'a yellow and green train sitting idle on the railroad track'. Replace the letter 'r' with 'i' in the sentence.
[EX A]:
a yellow and gieen tiain sitting idle on the iailioad tiack