instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a small dog in the back compartment of a backpack'. Replace the letter 'c' with 'd' in the sentence.
answer:
a small dog in the badk dompartment of a badkpadk


question:
Sentence: 'a memorial with various plaques and american flags on it'. Replace the letter 'a' with 'k' in the sentence.
answer:
k memorikl with vkrious plkques knd kmerickn flkgs on it


question:
Sentence: 'a picture of a neatly made bed in a home'. Replace the letter 'm' with 'f' in the sentence.
answer:

a picture of a neatly fade bed in a hofe