What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_12, if x_12 sleeps, then x_12 is cooking. There is at least one x_12 for which if x_12 plays squash, then x_12 is sleeping. For all x_12, if x_12 cooks, then x_12 is sleeping. For all x_12, if x_12 sleeps, then x_12 is playing squash. For all x_12, x_12 will cook or x_12 will play squash.
For all x_12, if x_12 cooks, then x_12 is playing squash. There is at least one x_12 for which if x_12 plays squash, then x_12 is cooking. There is at least one x_12 for which x_12 will sleep. For all x_12, x_12 will sleep if and only if x_12 will cook. For all x_12, x_12 will cook if and only if x_12 will sleep. There is at least one x_12 for which x_12 will play squash if and only if x_12 will sleep. There is at least one x_12 for which x_12 will sleep if and only if x_12 will play squash.