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: For all z, z will cook. There is at least one z for which z is excited.
There is at least one z for which z is excited and z will cook can be inferred via the existential conjunction rule. There is at least one z for which z will cook and z is excited can be inferred via the existential conjunction rule.