What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y_4: T(y_4) or ~W_1(y_4). exists y_4: W(y_4) or W_1(y_4). forall y_4: W(y_4) <-> T(y_4).
forall y_4: W_1(y_4) -> T(y_4). forall y_4: W(y_4) -> T(y_4). forall y_4: T(y_4) -> W(y_4).