What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_15: P_15(x_15) or T(x_15). forall x_15: P_13(x_15) <-> T(x_15). exists x_15: R_6(x_15) -> R_2(x_15). forall x_15: R_15(x_15) -> R_2(x_15). forall x_15: P_13(x_15) -> R_6(x_15). forall x_15: ~P_15(x_15) or R_15(x_15).
exists x_15: P_13(x_15) -> R_2(x_15). forall x_15: T(x_15) or R_15(x_15). forall x_15: P_13(x_15) -> T(x_15). forall x_15: T(x_15) -> P_13(x_15).