instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a mobile phone and a set of keys on a key chain'. Replace the letter 's' with 'j' in the sentence.
answer:
a mobile phone and a jet of keyj on a key chain


question:
Sentence: 'a man has his hand on top of a blender'. Replace the letter 'd' with 'o' in the sentence.
answer:
a man has his hano on top of a blenoer


question:
Sentence: 'a person on a green boogie board catching a wave'. Replace the letter 'e' with 'o' in the sentence.
answer:

a porson on a groon boogio board catching a wavo