Simplify the following text for a Grade 6 native English-speaking person.
Original: It coincides roughly with the story that Dostoevsky described in his letter to Katkov , and written in a form of a diary or journal , corresponds to what eventually became part II .
Simplified: It is quite similar to the story that Dostoevsky described in his letter to Katkov , and was written like a diary or journal . It had the same story as what later became part II .