Consider the following premises. There is at least one y for which if y were a musician, then y is a server. For all y, if y drives a car, then y is a musician. For all y, y is a musician. For all y, if y were a server, then y is driving a car. Can we infer the following from them? There is at least one y for which y will drive a car.
 From the fact that there is at least one y for which if y were a musician, then y is a server, and that for all y, if y were a server, then y is driving a car we can infer that there is at least one y for which if y were a musician, then y is driving a car. From the fact that for all y, if y drives a car, then y is a musician, and that there is at least one y for which if y were a musician, then y is driving a car we can infer that there is at least one y for which y will drive a car if and only if y is a musician. From the fact that there is at least one y for which y will drive a car if and only if y is a musician we can infer that there is at least one y for which if y were a musician, then y is driving a car. Finally, from the fact that there is at least one y for which if y were a musician, then y is driving a car, and that for all y, y is a musician we can infer that there is at least one y for which y will drive a car. Therefore, the answer is yes.