In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'a crowd looking at a trio of planes that are sitting idle'. Replace the letter 'a' with 'e' in the sentence.

Answer: e crowd looking et e trio of plenes thet ere sitting idle

Question: Sentence: 'there is a big room with furniture and items inside'. Replace the letter 'e' with 'k' in the sentence.

Answer: thkrk is a big room with furniturk and itkms insidk

Question: Sentence: 'two police men are on motorcycles with some american flags'. Replace the letter 'o' with 't' in the sentence.

Answer:
twt ptlice men are tn mtttrcycles with stme american flags