What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_16, if x_16 sleeps, then x_16 is playing tennis. There is at least one x_16 for which if x_16 plays tennis, then x_16 is sleeping. For all x_16, x_16 will sleep.
For all x_16, x_16 will play tennis. There is at least one x_16 for which x_16 will play tennis if and only if x_16 will sleep. There is at least one x_16 for which x_16 will sleep if and only if x_16 will play tennis.