What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_13, x_13 will not climb a mountain. For all x_13, x_13 will drink water if and only if x_13 will work. For all x_13, if x_13 plays tennis, then x_13 is drinking water. There is at least one x_13 for which if x_13 works, then x_13 is playing tennis. For all x_13, x_13 will climb a mountain if and only if x_13 will play tennis.
There is at least one x_13 for which if x_13 works, then x_13 is drinking water. For all x_13, if x_13 drinks water, then x_13 is working. For all x_13, if x_13 climbs a mountain, then x_13 is playing tennis. For all x_13, if x_13 works, then x_13 is drinking water. For all x_13, if x_13 plays tennis, then x_13 is climbing a mountain. For all x_13, x_13 will not play tennis.