What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y_4, if y_4 were a scientist, then y_4 is a lawyer. For all y_4, if y_4 were a scientist, then y_4 is running. For all y_4, y_4 will go running or y_4 will not sleep. There is at least one y_4 for which if y_4 goes running, then y_4 is a scientist.
There is at least one y_4 for which if y_4 goes running, then y_4 is a lawyer. For all y_4, if y_4 sleeps, then y_4 is running. There is at least one y_4 for which y_4 will go running if and only if y_4 is a scientist. There is at least one y_4 for which y_4 is a scientist if and only if y_4 will go running.