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, x_9 is a police officer if and only if x_9 is a writer. For all x_9, if x_9 were a doctor, then x_9 is bored. For all x_9, if x_9 were a police officer, then x_9 is a doctor. For all x_9, if x_9 were bored, then x_9 is a writer.
For all x_9, if x_9 were a doctor, then x_9 is a writer. For all x_9, if x_9 were a police officer, then x_9 is bored. For all x_9, if x_9 were a police officer, then x_9 is a writer. For all x_9, if x_9 were a writer, then x_9 is a police officer.