Consider the following premises. There is at least one x_13 for which x_13 will drive a car or x_13 will not work. For all x_13, x_13 is fast. For all x_13, if x_13 works, then x_13 is not fast. For all x_13, x_13 will work if and only if x_13 will drive a car. Can we infer the following from them? For all x_13, x_13 will drive a car.
 From the fact that there is at least one x_13 for which x_13 will drive a car or x_13 will not work we can infer that there is at least one x_13 for which if x_13 works, then x_13 is driving a car. From the fact that for all x_13, x_13 will work if and only if x_13 will drive a car we can infer that for all x_13, if x_13 drives a car, then x_13 is working. From the fact that there is at least one x_13 for which if x_13 works, then x_13 is driving a car, and that for all x_13, if x_13 drives a car, then x_13 is working we can infer that there is at least one x_13 for which x_13 will work if and only if x_13 will drive a car. From the fact that for all x_13, if x_13 works, then x_13 is not fast, and that for all x_13, x_13 is fast we can infer that for all x_13, x_13 will not work. Finally, from the fact that there is at least one x_13 for which x_13 will work if and only if x_13 will drive a car, and that for all x_13, x_13 will not work we can infer that there is at least one x_13 for which x_13 will not drive a car, which contradicts that For all x_13, x_13 will drive a car. Therefore, the answer is no.