Question: Consider the following knowledge base: x[A(x) A(John) B(x)] Is this statement a tautology? Is the following statement a tautology? x[A(x) A(John)

Consider the following knowledge base:

∀x[A(x) ∧ ¬A(John) ⇒ B(x)]

Is this statement a tautology? Is the following statement a tautology?

∃x[A(x) ∧ ¬A(John) ⇒ B(x)]

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