Here is a question about this article: Unicode defines two mapping methods: the Unicode Transformation Format (UTF) encodings, and the Universal Coded Character Set (UCS) encodings. An encoding maps (possibly a subset of) the range of Unicode code points to sequences of values in some fixed-size range, termed code values. The numbers in the names of the encodings indicate the number of bits per code value (for UTF encodings) or the number of bytes per code value (for UCS encodings). UTF-8 and UTF-16 are probably the most commonly used encodings. UCS-2 is an obsolete subset of UTF-16; UCS-4 and UTF-32 are functionally equivalent.
What is the answer to this question: How many mapping methods does Unicode define?
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So... two


Here is a question about this article: NARA also maintains the Presidential Library system, a nationwide network of libraries for preserving and making available the documents of U.S. presidents since Herbert Hoover. The Presidential Libraries include:
What is the answer to this question: What agency maintains the Presidential Library system?
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So... NARA


Here is a question about this article: Lincoln Center for the Performing Arts, anchoring Lincoln Square on the Upper West Side of Manhattan, is home to numerous influential arts organizations, including the Metropolitan Opera, New York City Opera, New York Philharmonic, and New York City Ballet, as well as the Vivian Beaumont Theater, the Juilliard School, Jazz at Lincoln Center, and Alice Tully Hall. The Lee Strasberg Theatre and Film Institute is in Union Square, and Tisch School of the Arts is based at New York University, while Central Park SummerStage presents performances of free plays and music in Central Park.
What is the answer to this question: In what New York park can one find performances at no cost?
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So...
Central Park