Consider the following FOL sentence: PA Jx. (Q(x) ^ Vy.R(x, y)) Which one of the following formulas is the result of Skolemisation of it? Select one: PAQ(a) A Vy.R(a, y) а. оь. Э. (РЛФ(г) л R(a, y)) PA 3r. (a(x) A Vy.a(x, y)) O d. Væ.Vy.(P ^ Q(x) A R(x, y)) C. None of the above O e.

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