Question: Suppose a knowledge base contains just one sentence, x AsHighAs(x, Everest). Which of the following are legitimate results of applying Existential Instantiation? a. AsHighAs(Everest,

Suppose a knowledge base contains just one sentence, ∃ x AsHighAs(x, Everest). Which of the following are legitimate results of applying Existential Instantiation?

a. AsHighAs(Everest, Everest ).

b. AsHighAs(Kilimanjaro, Everest).

c. AsHighAs(Kilimanjaro, Everest) ∧ AsHighAs(BenNevis, Everest) (after two applications).

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