instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a man that is on the back of an elephant'. Replace the letter 'c' with 'd' in the sentence.
answer:
a man that is on the badk of an elephant


question:
Sentence: 'a close up of a bathroom sink with soap and tooth brushes in a cup'. Replace the letter 't' with 'y' in the sentence.
answer:
a close up of a bayhroom sink wiyh soap and yooyh brushes in a cup


question:
Sentence: 'a couple if birds walking through a muddy river'. Replace the letter 'r' with 'f' in the sentence.
answer:

a couple if bifds walking thfough a muddy fivef