Consider the following premises. For all x_2, x_2 is a nurse if and only if x_2 is a sailor. For all x_2, if x_2 drives a car, then x_2 is a sailor. There is at least one x_2 for which x_2 will drive a car. Can we infer the following from them? For all x_2, x_2 is not a nurse.
 From the fact that for all x_2, x_2 is a nurse if and only if x_2 is a sailor we can infer that for all x_2, if x_2 were a sailor, then x_2 is a nurse. From the fact that for all x_2, if x_2 drives a car, then x_2 is a sailor, and that for all x_2, if x_2 were a sailor, then x_2 is a nurse we can infer that for all x_2, if x_2 drives a car, then x_2 is a nurse. Finally, from the fact that for all x_2, if x_2 drives a car, then x_2 is a nurse, and that there is at least one x_2 for which x_2 will drive a car we can infer that there is at least one x_2 for which x_2 is a nurse, which contradicts that For all x_2, x_2 is not a nurse. Therefore, the answer is no.