Primary Sources: Music recording, Government documents about a new policy, Photograph of President Marcos, Letter by a philosopher, Diary of Anne Frank, Painting by Davinci, Novel, Results of an opinion poll, Secondary Sources: Academic book about music style, Article analyzing a novel, Biography of Anne Frank, Newspaper article about a new government policy, Blog post interpreting the results of a poll, Exhibition catalog explaining a famous painting, Textbook summarizing a philisopher's ideas,

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