What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_1 for which if x_1 were an artist, then x_1 is drinking water. For all x_1, x_1 will not drink water. For all x_1, x_1 is an artist or x_1 is sad.
There is at least one x_1 for which x_1 is not an artist.