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: 'a bunch of signs on a pole on the street'. Replace the letter 'c' with 's' in the sentence.

Answer: a bunsh of signs on a pole on the street


Question: Sentence: 'a very large adult elephant standing a lone in a large field'. Replace the letter 'l' with 'f' in the sentence.

Answer:
a very farge aduft efephant standing a fone in a farge fiefd