Consider the following premises. For all x_7, if x_7 were a taxi driver, then x_7 is an electrician. There is at least one x_7 for which if x_7 works, then x_7 is not an electrician. For all x_7, x_7 is a taxi driver and x_7 is an office clerk. Can we infer the following from them? For all x_7, x_7 will work.
 From the fact that for all x_7, x_7 is a taxi driver and x_7 is an office clerk we can infer that for all x_7, x_7 is a taxi driver. From the fact that for all x_7, if x_7 were a taxi driver, then x_7 is an electrician, and that for all x_7, x_7 is a taxi driver we can infer that for all x_7, x_7 is an electrician. Finally, from the fact that there is at least one x_7 for which if x_7 works, then x_7 is not an electrician, and that for all x_7, x_7 is an electrician we can infer that there is at least one x_7 for which x_7 will not work, which contradicts that For all x_7, x_7 will work. Therefore, the answer is no.