What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_10, x_10 will sleep if and only if x_10 is a doctor. For all x_10, x_10 is a soldier. There is at least one x_10 for which if x_10 plays tennis, then x_10 is sleeping. For all x_10, if x_10 were a doctor, then x_10 is not a soldier.
For all x_10, x_10 is not a doctor. For all x_10, if x_10 sleeps, then x_10 is a doctor. For all x_10, if x_10 were a doctor, then x_10 is sleeping.