In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'many street signs in front of a building while it is snowing'. Replace the letter 'r' with 'x' in the sentence.

Answer: many stxeet signs in fxont of a building while it is snowing


Question: Sentence: 'a group of giraffe standing on top of a dirt field'. Replace the letter 'a' with 'y' in the sentence.

Answer: y group of giryffe stynding on top of y dirt field


Question: Sentence: 'a smart phone sitting on top of a table'. Replace the letter 'h' with 'c' in the sentence.

Answer:
a smart pcone sitting on top of a table