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: exists x_4: W(x_4) and T(x_4).
exists x_4: W(x_4) can be inferred via the existential simplification rule. exists x_4: T(x_4) can be inferred via the existential simplification rule.