instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a boy is sitting at a dinner table with his food'. Replace the letter 't' with 'r' in the sentence.
answer:
a boy is sirring ar a dinner rable wirh his food


question:
Sentence: 'a person who is looking at their cell phone'. Replace the letter 'o' with 'b' in the sentence.
answer:
a persbn whb is lbbking at their cell phbne


question:
Sentence: 'a man riding the waves on his surf board'. Replace the letter 's' with 'o' in the sentence.
answer:

a man riding the waveo on hio ourf board