instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a tennis player throwing a ball at the ground'. Replace the letter 'r' with 'f' in the sentence.
answer:
a tennis playef thfowing a ball at the gfound


question:
Sentence: 'a man is somewhat hard to be seen in the wave, on his board'. Replace the letter 's' with 'b' in the sentence.
answer:
a man ib bomewhat hard to be been in the wave, on hib board


question:
Sentence: 'a large display on a street with some food'. Replace the letter 'd' with 'o' in the sentence.
answer:

a large oisplay on a street with some fooo