What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x, x is an artist if and only if x will drink water. For all x, if x were an artist, then x is playing squash. For all x, if x plays tennis, then x is drinking water. There is at least one x for which if x plays squash, then x is playing tennis.
There is at least one x for which if x plays squash, then x is drinking water. There is at least one x for which if x were an artist, then x is playing tennis. For all x, if x were an artist, then x is drinking water. For all x, if x drinks water, then x is an artist.