Basic Argument
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Evidence
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Rule
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Arthur is lying on his back.
Arthur is still holding onto the glass. The glass in Arthur's hand is unbroken. The rug on the stairs is perfectly straight. | As a rule, if a person falls while walking down the stairs, he or she will land face down. As a rule, when a person is walking down the stairs holding something, he or she would drop the object and try to save himself or herself. As a rule, if there is a rug on the stairs and a person falls down the stairs, the rug will be crumbled and perhaps ripped. |