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In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

He posited that technology was fundamentally enframing, and claimed that facticity was the "thrownness" of existence. A notable lecture by this man dealt with Sophocles' Antigone and "Poeticizing the essence of rivers," and was named after Friedrich Holderlin's poem "Der Ister. " He denied a change in his thinking in a letter published by William Richardson, and that so-called "turn" is exemplified by his Contributions to Philosophy (From Enowning). Other works by this man include Kant and the Problem of Metaphysics and Off the Beaten Track. FTP, name this philosopher who posited a "being for whom being is in question," dasein, in his work Being and Time.
Output:
Social Science