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

[EX Q]: Sentence: 'a red train sitting at an empty station'. Replace the letter 'i' with 'h' in the sentence.
[EX A]: a red trahn shtthng at an empty stathon

[EX Q]: Sentence: 'a woman is on skis riding down the snow covered sloped'. Replace the letter 'd' with 'q' in the sentence.
[EX A]: a woman is on skis riqing qown the snow covereq slopeq

[EX Q]: Sentence: 'a zebra grazing from a grassy open field'. Replace the letter 'f' with 'd' in the sentence.
[EX A]:
a zebra grazing drom a grassy open dield