What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_2: T(x_2) or Q(x_2). exists x_2: Q_2(x_2) -> R_2(x_2). forall x_2: T(x_2) -> Q_2(x_2). forall x_2: Q(x_2) -> R_2(x_2).
exists x_2: T(x_2) -> R_2(x_2).