Consider the following premises. There is at least one x_12 for which x_12 will go running and x_12 will play a game. For all x_12, x_12 will listen to a song and x_12 will take a plane. Can we infer the following from them? There is at least one x_12 for which x_12 will go running and x_12 will listen to a song.
 From the fact that for all x_12, x_12 will listen to a song and x_12 will take a plane we can infer that for all x_12, x_12 will listen to a song. From the fact that there is at least one x_12 for which x_12 will go running and x_12 will play a game we can infer that there is at least one x_12 for which x_12 will go running. Finally, from the fact that there is at least one x_12 for which x_12 will go running, and that for all x_12, x_12 will listen to a song we can infer that there is at least one x_12 for which x_12 will go running and x_12 will listen to a song. Therefore, the answer is yes.