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_26: P_26(x_26) or Q_26(x_26). s_1 and q_18. forall x_26: R_26(x_26) -> W(x_26). forall x_26: Q_26(x_26) -> R_26(x_26). forall x_26: P_26(x_26) -> R_26(x_26).
s_1 can be inferred via the simplification rule. q_18 can be inferred via the simplification rule. forall x_26: Q_26(x_26) -> W(x_26) can be inferred via the universal transitivity rule. forall x_26: P_26(x_26) -> W(x_26) can be inferred via the universal transitivity rule. forall x_26: R_26(x_26) can be inferred via the universal disjunction elimination rule.