Consider the following premises. For all x_10, x_10 is a cashier. For all x_10, x_10 will make tea or x_10 is sad. For all x_10, x_10 is not rich. There is at least one x_10 for which if x_10 makes tea, then x_10 is rich. Can we infer the following from them? There is at least one x_10 for which x_10 is sad and x_10 is a cashier.
 From the fact that there is at least one x_10 for which if x_10 makes tea, then x_10 is rich, and that for all x_10, x_10 is not rich we can infer that there is at least one x_10 for which x_10 will not make tea. From the fact that for all x_10, x_10 will make tea or x_10 is sad, and that there is at least one x_10 for which x_10 will not make tea we can infer that there is at least one x_10 for which x_10 is sad. Finally, from the fact that there is at least one x_10 for which x_10 is sad, and that for all x_10, x_10 is a cashier we can infer that there is at least one x_10 for which x_10 is sad and x_10 is a cashier. Therefore, the answer is yes.