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 drink water if and only if x_10 will play tennis. There is at least one x_10 for which x_10 will drink water if and only if x_10 will play tennis.
For all x_10, if x_10 drinks water, then x_10 is playing tennis. There is at least one x_10 for which if x_10 drinks water, then x_10 is playing tennis. For all x_10, if x_10 plays tennis, then x_10 is drinking water. There is at least one x_10 for which if x_10 plays tennis, then x_10 is drinking water.