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: forall x_13: T_1(x_13) -> W_3(x_13). forall x_13: Q_13(x_13) -> W_3(x_13). forall x_13: T_1(x_13) or Q_13(x_13). W(a_1).
exists x: W(x) can be inferred via the existential generalization rule. forall x_13: W_3(x_13) can be inferred via the universal disjunction elimination rule.