What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_14, x_14 will play a game if and only if x_14 is a janitor. For all x_14, x_14 is not a janitor. Susan is playing a game if and only if Elisabeth is an artist.
If Susan plays a game, then Elisabeth is an artist. If Elisabeth were an artist, then Susan is playing a game. For all x_14, if x_14 plays a game, then x_14 is a janitor. For all x_14, if x_14 were a janitor, then x_14 is playing a game. For all x_14, x_14 will not play a game.