Identify the appositive in each of the following sentences and the word or phrase it details.
—J. R. R. Tolkien, The Hobbit
—Dinesh D’Souza, “Equality and the Classics”
—Sven Birkerts, The Gutenberg Elegies
—Barbara Kingsolver, “Knowing Our Place”
—Susan Sontag, Regarding the Pain of Others