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: There is at least one x for which x is a nurse and x is bored.
There is at least one x for which x is a nurse can be inferred via the existential simplification rule. There is at least one x for which x is bored can be inferred via the existential simplification rule.