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 y_3, if y_3 goes running, then y_3 is sleeping. For all y_3, y_3 is not an artist. There is at least one y_3 for which if y_3 sleeps, then y_3 is running. For all y_3, y_3 is an artist if and only if y_3 will go running.
There is at least one y_3 for which y_3 will sleep if and only if y_3 will go running can be inferred via the existential biconditional introduction rule. There is at least one y_3 for which y_3 will go running if and only if y_3 will sleep can be inferred via the existential biconditional introduction rule. For all y_3, if y_3 were an artist, then y_3 is running can be inferred via the universal biconditional elimination rule. For all y_3, if y_3 goes running, then y_3 is an artist can be inferred via the universal biconditional elimination rule. For all y_3, y_3 will not go running can be inferred via the universal biconditional elimination rule.