What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_15, x_15 will not listen to a song. There is at least one x_15 for which x_15 will drive a car if and only if x_15 is a sailor. For all x_15, if x_15 were a sailor, then x_15 is poor. For all x_15, if x_15 drives a car, then x_15 is a sailor. For all x_15, if x_15 were poor, then x_15 is listening to a song.
For all x_15, x_15 is not poor. For all x_15, if x_15 were a sailor, then x_15 is listening to a song. For all x_15, if x_15 drives a car, then x_15 is poor. There is at least one x_15 for which if x_15 drives a car, then x_15 is a sailor. There is at least one x_15 for which if x_15 were a sailor, then x_15 is driving a car.