list feanormost important deeds in tolkiens silmarillion. Write a summary for this book chapter that retains all important information while reducing the word count to a minimum. Ensure that the summary accurately conveys the key   points of the original text and that the meaning is not lost. The   summary should be in prose form, not bullet points or any other format. Keep in mind that the goal is to make the text as concise as possible while retaining all   the relevant information.   Please answer in JSON format.
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