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 if y_3 goes running, then y_3 is drinking water. For all y_3, y_3 will go running if and only if y_3 will drink water.
For all y_3, if y_3 goes running, then y_3 is drinking water can be inferred via the universal biconditional elimination rule. For all y_3, if y_3 drinks water, then y_3 is running can be inferred via the universal biconditional elimination rule.