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 were a police officer, then x_12 is a sailor. There is at least one x_12 for which if x_12 cooks, then x_12 is a police officer. For all x_12, if x_12 climbs a mountain, then x_12 is playing tennis. For all x_12, if x_12 plays tennis, then x_12 is climbing a mountain. For all x_12, if x_12 plays tennis, then x_12 is cooking.
For all x_12, if x_12 climbs a mountain, then x_12 is cooking. There is at least one x_12 for which if x_12 cooks, then x_12 is a sailor. There is at least one x_12 for which if x_12 plays tennis, then x_12 is a police officer. For all x_12, x_12 will climb a mountain if and only if x_12 will play tennis. For all x_12, x_12 will play tennis if and only if x_12 will climb a mountain.