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

Ex Input:
Sentence: 'bags of seeds with a pair of black scissors sitting on them'. Replace the letter 'b' with 'y' in the sentence.

Ex Output:
yags of seeds with a pair of ylack scissors sitting on them


Ex Input:
Sentence: 'several older electronics, including cellular phones and a palm pilot with a  broken screen next to each other in white box enclosure'. Replace the letter 'u' with 't' in the sentence.

Ex Output:
several older electronics, incltding celltlar phones and a palm pilot with a  broken screen next to each other in white box enclostre


Ex Input:
Sentence: 'some fruit that is growing on a tree'. Replace the letter 'r' with 'x' in the sentence.

Ex Output:

some fxuit that is gxowing on a txee