instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a person is standing in the snow in skis'. Replace the letter 'g' with 'x' in the sentence.
answer:
a person is standinx in the snow in skis

question:
Sentence: 'bananas, oranges and apples are in shades of yellow and orange'. Replace the letter 'r' with 'b' in the sentence.
answer:
bananas, obanges and apples abe in shades of yellow and obange

question:
Sentence: 'a red fire truck being driven by a fire fighter'. Replace the letter 'e' with 'c' in the sentence.
answer:
a rcd firc truck bcing drivcn by a firc fightcr