What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_2, if x_2 drinks water, then x_2 is sad. Michael is not sad. For all x_2, x_2 will play tennis if and only if x_2 will drink water.
For all x_2, if x_2 plays tennis, then x_2 is drinking water. For all x_2, if x_2 drinks water, then x_2 is playing tennis.