Consider the following premises. For all x_15, x_15 is a politician. Susan is a janitor. For all x_15, x_15 is fast and x_15 is a cashier. Can we infer the following from them? Susan is a janitor and Michael is fast.
 From the fact that for all x_15, x_15 is fast and x_15 is a cashier we can infer that for all x_15, x_15 is fast. From the fact that for all x_15, x_15 is fast, and that for all x_15, x_15 is a politician we can infer that for all x_15, x_15 is fast and x_15 is a politician. From the fact that for all x_15, x_15 is fast and x_15 is a politician we can infer that Michael is fast and Michael is a politician. From the fact that Michael is fast and Michael is a politician we can infer that Michael is fast. Finally, from the fact that Susan is a janitor, and that Michael is fast we can infer that Susan is a janitor and Michael is fast. Therefore, the answer is yes.