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: w_2 -> t. forall z: Q(z) and U(z). w_2.
t can be inferred via the modus ponens rule. forall z: Q(z) can be inferred via the universal simplification rule. forall z: U(z) can be inferred via the universal simplification rule.