In this task, you need to replace a letter in the sentence with another given letter.

[Q]: Sentence: 'a red train sitting at an empty station'. Replace the letter 'i' with 'h' in the sentence.
[A]: a red trahn shtthng at an empty stathon


[Q]: Sentence: 'street sign titled kittery maine state line in green'. Replace the letter 'e' with 'r' in the sentence.
[A]: strrrt sign titlrd kittrry mainr statr linr in grrrn


[Q]: Sentence: 'blue umbrella propped up against a stone pillar'. Replace the letter 'r' with 'j' in the sentence.
[A]:
blue umbjella pjopped up against a stone pillaj