What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y_1, y_1 is a politician if and only if y_1 will go running. For all y_1, y_1 is not a politician. There is at least one y_1 for which if y_1 were a politician, then y_1 is running.
For all y_1, if y_1 were a politician, then y_1 is running. For all y_1, if y_1 goes running, then y_1 is a politician. For all y_1, y_1 will not go running.