What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? ~P(c). forall x_3: P(x_3) <-> S_2(x_3). S_2(c) <-> q_1.
S_2(c) -> q_1. q_1 -> S_2(c). forall x_3: P(x_3) -> S_2(x_3). forall x_3: S_2(x_3) -> P(x_3).