Consider the following premises. If James were excited, then James is a cashier. For all x_9, x_9 is a cashier if and only if x_9 is excited. Can we infer the following from them? The fact that James were a cashier does not imply that James is excited.
 From the fact that for all x_9, x_9 is a cashier if and only if x_9 is excited we can infer that James is a cashier if and only if James is excited. Finally, from the fact that James is a cashier if and only if James is excited we can infer that if James were a cashier, then James is excited, which contradicts that The fact that James were a cashier does not imply that James is excited. Therefore, the answer is no.