What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists y_1: Q_2(y_1) or P(y_1). forall y_1: T(y_1) <-> Q_2(y_1). forall y_1: ~P_1(y_1). forall y_1: T(y_1) <-> P_1(y_1).
forall y_1: T(y_1) -> Q_2(y_1). forall y_1: T(y_1) -> P_1(y_1). forall y_1: Q_2(y_1) -> T(y_1). forall y_1: P_1(y_1) -> T(y_1). forall y_1: ~T(y_1).