instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a group of small children sitting at a table in front of a pizza'. Replace the letter 'r' with 'd' in the sentence.
answer:
a gdoup of small childden sitting at a table in fdont of a pizza


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


question:
Sentence: 'a cute kitten is sitting in a purple slipper'. Replace the letter 'e' with 'y' in the sentence.
answer:

a cuty kittyn is sitting in a purply slippyr