What device does Harry Potter use to track the comings and goings of people at HogwArts castle?

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According to popular wisdom, you should only eat oysters in months whose names contain which letter?

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What wondrous creation was designed by Sostratus of Cnidus?

Whose "Coffee Cantata" concerns a girl whose father demands she loses her addiction to coffee before marriage?

What epic poem begins "Arma virumque cano"?

How many claws does a domestic cat have?

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Who was Olive Oyl's boyfriend before Popeye?

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The Canadian Goods and Services Tax came into effect on what date?

Who is the Greek equivalent of the Roman god Diana?