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: 'street sign titled kittery maine state line in green'. Replace the letter 'e' with 'r' in the sentence.

Answer: strrrt sign titlrd kittrry mainr statr linr in grrrn


Question: Sentence: 'two men display their presents under a christmas tree'. Replace the letter 't' with 'w' in the sentence.

Answer:
wwo men display wheir presenws under a chriswmas wree