instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a man with a backpack on a motorcycle'. Replace the letter 't' with 'd' in the sentence.
answer:
a man widh a backpack on a modorcycle


question:
Sentence: 'a painting of scissors going to cut a chain with a lock'. Replace the letter 'g' with 'v' in the sentence.
answer:
a paintinv of scissors voinv to cut a chain with a lock


question:
Sentence: 'some zebras are eating green grass and a hill'. Replace the letter 's' with 'z' in the sentence.
answer:

zome zebraz are eating green grazz and a hill