What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: forall y: S_3(y) -> T_1(y). forall y: W_1(y) -> S_3(y). exists y: T_1(y) -> W_1(y).
forall y: W_1(y) -> T_1(y) can be inferred via the universal transitivity rule. exists y: T_1(y) -> S_3(y) can be inferred via the existential transitivity rule. exists y: S_3(y) -> W_1(y) can be inferred via the existential transitivity rule.