Consider the following premises. There is at least one x_4 for which x_4 will drive a car if and only if x_4 will play squash. For all x_4, if x_4 listens to a song, then x_4 is driving a car. Can we infer the following from them? There is at least one x_4 for which if x_4 listens to a song, then x_4 is playing squash.
 From the fact that there is at least one x_4 for which x_4 will drive a car if and only if x_4 will play squash we can infer that there is at least one x_4 for which if x_4 drives a car, then x_4 is playing squash. Finally, from the fact that for all x_4, if x_4 listens to a song, then x_4 is driving a car, and that there is at least one x_4 for which if x_4 drives a car, then x_4 is playing squash we can infer that there is at least one x_4 for which if x_4 listens to a song, then x_4 is playing squash. Therefore, the answer is yes.