Consider the following premises. For all x_6, x_6 will drive a car or x_6 is sad. For all x_6, x_6 will not listen to a song or x_6 is rich. For all x_6, if x_6 drives a car, then x_6 is listening to a song. For all x_6, if x_6 were sad, then x_6 is listening to a song. Can we infer the following from them? There is at least one x_6 for which neither x_6 will play tennis nor x_6 is rich.
 From the fact that for all x_6, if x_6 drives a car, then x_6 is listening to a song, that for all x_6, if x_6 were sad, then x_6 is listening to a song, and that for all x_6, x_6 will drive a car or x_6 is sad we can infer that for all x_6, x_6 will listen to a song. From the fact that for all x_6, x_6 will listen to a song we can infer that for all x_6, x_6 will listen to a song or x_6 will play tennis. Finally, from the fact that for all x_6, x_6 will listen to a song or x_6 will play tennis, and that for all x_6, x_6 will not listen to a song or x_6 is rich we can infer that for all x_6, x_6 will play tennis or x_6 is rich, which contradicts that There is at least one x_6 for which neither x_6 will play tennis nor x_6 is rich. Therefore, the answer is no.