What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_9, if x_9 were a doctor, then x_9 is a police officer. There is at least one x_9 for which x_9 will write a letter. For all x_9, if x_9 were an artist, then x_9 is a police officer. For all x_9, x_9 is an artist. For all x_9, if x_9 were a police officer, then x_9 is playing a game.
For all x_9, x_9 is a police officer. For all x_9, if x_9 were a doctor, then x_9 is playing a game. For all x_9, if x_9 were an artist, then x_9 is playing a game. There is at least one x_9 for which x_9 will write a letter and x_9 is an artist. There is at least one x_9 for which x_9 is an artist and x_9 will write a letter.