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 excited if and only if x_9 is a writer. For all x_9, x_9 is not a writer. There is at least one x_9 for which x_9 is excited if and only if x_9 will cook.
For all x_9, if x_9 were excited, then x_9 is a writer. There is at least one x_9 for which if x_9 were excited, then x_9 is cooking. For all x_9, if x_9 were a writer, then x_9 is excited. There is at least one x_9 for which if x_9 cooks, then x_9 is excited. For all x_9, x_9 is not excited.