What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists y: S_3(y). forall y: P(y). forall y: T(y) <-> S_3(y).
exists y: S_3(y) and P(y). exists y: P(y) and S_3(y). forall y: T(y) -> S_3(y). forall y: S_3(y) -> T(y).