Consider the following premises. For all x_3, x_3 will drive a car. There is at least one x_3 for which x_3 is a scientist. For all x_3, if x_3 were a scientist, then x_3 is listening to a song. Can we infer the following from them? There is at least one x_3 for which x_3 will listen to a song and x_3 will drive a car.
 From the fact that for all x_3, if x_3 were a scientist, then x_3 is listening to a song, and that there is at least one x_3 for which x_3 is a scientist we can infer that there is at least one x_3 for which x_3 will listen to a song. Finally, from the fact that there is at least one x_3 for which x_3 will listen to a song, and that for all x_3, x_3 will drive a car we can infer that there is at least one x_3 for which x_3 will listen to a song and x_3 will drive a car. Therefore, the answer is yes.