Consider the following premises. For all x_8, x_8 is a cashier or x_8 will drive a car. For all x_8, x_8 will write a letter. For all x_8, if x_8 were a nurse, then x_8 is not writing a letter. For all x_8, x_8 is not a cashier or x_8 will take a plane. For all x_8, x_8 will drive a car if and only if x_8 is a nurse. Can we infer the following from them? There is at least one x_8 for which x_8 will not take a plane.
 From the fact that for all x_8, if x_8 were a nurse, then x_8 is not writing a letter, and that for all x_8, x_8 will write a letter we can infer that for all x_8, x_8 is not a nurse. From the fact that for all x_8, x_8 will drive a car if and only if x_8 is a nurse, and that for all x_8, x_8 is not a nurse we can infer that for all x_8, x_8 will not drive a car. From the fact that for all x_8, x_8 is a cashier or x_8 will drive a car, and that for all x_8, x_8 is not a cashier or x_8 will take a plane we can infer that for all x_8, x_8 will drive a car or x_8 will take a plane. Finally, from the fact that for all x_8, x_8 will drive a car or x_8 will take a plane, and that for all x_8, x_8 will not drive a car we can infer that for all x_8, x_8 will take a plane, which contradicts that There is at least one x_8 for which x_8 will not take a plane. Therefore, the answer is no.