What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y_3: R(y_3) <-> W(y_3). q_2 or R(a_12). q_2 -> p. p -> W(a_12).
q_2 -> W(a_12). R_1(a_12) -> q_2. forall y_3: R(y_3) -> W(y_3). forall y_3: W(y_3) -> R(y_3).