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

[EX Q]: Sentence: 'a person holding on to a black remote'. Replace the letter 'n' with 'h' in the sentence.
[EX A]: a persoh holdihg oh to a black remote

[EX Q]: Sentence: 'a couple of brown bears walking across a lush green field'. Replace the letter 'w' with 'o' in the sentence.
[EX A]: a couple of broon bears oalking across a lush green field

[EX Q]: Sentence: 'a passenger train that is driving on some tracks'. Replace the letter 't' with 'q' in the sentence.
[EX A]:
a passenger qrain qhaq is driving on some qracks