In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'subway train approaching the platform of a subway station'. Replace the letter 'y' with 'c' in the sentence.

Answer: subwac train approaching the platform of a subwac station

Question: Sentence: 'a skier in the midst of a jump'. Replace the letter 'm' with 'd' in the sentence.

Answer: a skier in the didst of a judp

Question: Sentence: 'a couple of giraffes eat some food out of a trey'. Replace the letter 'f' with 'e' in the sentence.

Answer:
a couple oe giraeees eat some eood out oe a trey