Consider the following premises. Susan is a cashier. For all y, y will sleep or y is a politician. For all y, y will not sleep. Can we infer the following from them? Jessica is a politician and Susan is a cashier.
 From the fact that for all y, y will sleep or y is a politician, and that for all y, y will not sleep we can infer that for all y, y is a politician. From the fact that for all y, y is a politician we can infer that Jessica is a politician. Finally, from the fact that Jessica is a politician, and that Susan is a cashier we can infer that Jessica is a politician and Susan is a cashier. Therefore, the answer is yes.