Consider the following premises. For all x_10, x_10 is a taxi driver or x_10 is an office clerk. For all x_10, if x_10 were a taxi driver, then x_10 is cooking. There is at least one x_10 for which if x_10 cooks, then x_10 is a taxi driver. For all x_10, x_10 will not cook. Can we infer the following from them? There is at least one x_10 for which x_10 is an office clerk.
 From the fact that for all x_10, if x_10 were a taxi driver, then x_10 is cooking, and that there is at least one x_10 for which if x_10 cooks, then x_10 is a taxi driver we can infer that there is at least one x_10 for which x_10 is a taxi driver if and only if x_10 will cook. From the fact that there is at least one x_10 for which x_10 is a taxi driver if and only if x_10 will cook, and that for all x_10, x_10 will not cook we can infer that there is at least one x_10 for which x_10 is not a taxi driver. Finally, from the fact that for all x_10, x_10 is a taxi driver or x_10 is an office clerk, and that there is at least one x_10 for which x_10 is not a taxi driver we can infer that there is at least one x_10 for which x_10 is an office clerk. Therefore, the answer is yes.