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

[EX Q]: Sentence: 'two police officers riding horses down the street'. Replace the letter 'o' with 'd' in the sentence.
[EX A]: twd pdlice dfficers riding hdrses ddwn the street

[EX Q]: Sentence: 'a person with a cell phone standing next to a train'. Replace the letter 's' with 't' in the sentence.
[EX A]: a perton with a cell phone ttanding next to a train

[EX Q]: Sentence: 'the airplane is flying high through the air'. Replace the letter 'i' with 's' in the sentence.
[EX A]:
the asrplane ss flysng hsgh through the asr