:Coco is an animal.
:Therefore, Coco is a dog.

;Denying the antecedent
:All cats are animals.
:Missy is not a cat.
:Therefore, Missy is not an animal.

A logical argument, seen as an ordered set of sentences, has a logical form that derives from the form of its constituent sentences; the logical form of an argument is sometimes called argument form. Some authors only define logical form with respect

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