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3. (Exercise 4.4 in Chapter 4 of the textbook) Given the set of clauses fpr, pr, qr, ], construct two refutations (i.e. demonstrate using the

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3. (Exercise 4.4 in Chapter 4 of the textbook) Given the set of clauses fpr, pr, qr, ], construct two refutations (i.e. demonstrate using the resolution procedure that the set of clauses is unsatisfiable): (a) one by resolving the literals in the order (p, q, r)

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