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 and x_9 is curious. For all x_9, x_9 is a mechanic or x_9 will read a book. There is at least one x_9 for which x_9 is not a mechanic.
There is at least one x_9 for which x_9 will read a book. For all x_9, x_9 is a police officer. For all x_9, x_9 is curious.