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_6 or P_15(a_14). forall x_15: Q_15(x_15) -> R_15(x_15). p_6 -> R_15(a_14). forall x_15: P_15(x_15) -> Q_15(x_15).
R_1(a_14) -> p_6 can be inferred via the rewriting rule. forall x_15: P_15(x_15) -> R_15(x_15) can be inferred via the universal transitivity rule.