What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_17, if x_17 were poor, then x_17 is drinking water. There is at least one x_17 for which x_17 will read a book. For all x_17, if x_17 plays tennis, then x_17 is not reading a book. For all x_17, x_17 will play tennis if and only if x_17 will drink water. For all x_17, if x_17 drinks water, then x_17 is poor.
There is at least one x_17 for which x_17 will not play tennis. For all x_17, x_17 is poor if and only if x_17 will drink water. For all x_17, x_17 will drink water if and only if x_17 is poor. For all x_17, if x_17 plays tennis, then x_17 is drinking water. For all x_17, if x_17 drinks water, then x_17 is playing tennis.