instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a couple of people that are petting a horse'. Replace the letter 'e' with 'p' in the sentence.
answer:
a couplp of ppoplp that arp pptting a horsp

question:
Sentence: 'there is a purse on the floor with its contents spilled out'. Replace the letter 'd' with 'v' in the sentence.
answer:
there is a purse on the floor with its contents spillev out

question:
Sentence: 'a man smiles as he holds a bright surf board'. Replace the letter 'i' with 's' in the sentence.
answer:
a man smsles as he holds a brsght surf board