What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: p_2 or t_3. forall x: Q(x) -> W(x). ~p_2 or Q(j). t_3 <-> W(j).
t_3 or Q(j) can be inferred via the resolution rule. R_1(j) -> ~p_2 can be inferred via the rewriting rule. t_3 -> W(j) can be inferred via the biconditional elimination rule. W(j) -> t_3 can be inferred via the biconditional elimination rule.