What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? p_4 <-> S_8(a_8). R_8(a_8) -> p_4. forall x_8: R_8(x_8) or S_8(x_8).
p_4 -> S_8(a_8). S_8(a_8) -> p_4.