What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? t -> S_12(a_12). forall x_12: R_12(x_12) <-> S_12(x_12). p_6 or R_12(a_12). p_6 -> t.
p_6 -> S_12(a_12). R_1(a_12) -> p_6. forall x_12: R_12(x_12) -> S_12(x_12). forall x_12: S_12(x_12) -> R_12(x_12).