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 y_3 for which y_3 will go running or y_3 is not a nurse. For all y_3, if y_3 goes running, then y_3 is working.
There is at least one y_3 for which if y_3 were a nurse, then y_3 is running can be inferred via the existential rewriting rule.