instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a person snow skiing down a hill while the hold their ski poles'. Replace the letter 'r' with 'g' in the sentence.
answer:
a pegson snow skiing down a hill while the hold theig ski poles

question:
Sentence: 'a couple of giraffe standing next to each other'. Replace the letter 't' with 'c' in the sentence.
answer:
a couple of giraffe scanding nexc co each ocher

question:
Sentence: 'a man in a best and top hat standing on a grass field while a baseball game is played'. Replace the letter 'a' with 'o' in the sentence.
answer:
o mon in o best ond top hot stonding on o gross field while o boseboll gome is ployed