Consider the following premises. For all x_12, x_12 will read a book. There is at least one x_12 for which x_12 will listen to a song or x_12 will not read a book. For all x_12, if x_12 works, then x_12 is not listening to a song. Can we infer the following from them? For all x_12, x_12 will work.
 From the fact that there is at least one x_12 for which x_12 will listen to a song or x_12 will not read a book we can infer that there is at least one x_12 for which if x_12 reads a book, then x_12 is listening to a song. From the fact that there is at least one x_12 for which if x_12 reads a book, then x_12 is listening to a song, and that for all x_12, x_12 will read a book we can infer that there is at least one x_12 for which x_12 will listen to a song. Finally, from the fact that for all x_12, if x_12 works, then x_12 is not listening to a song, and that there is at least one x_12 for which x_12 will listen to a song we can infer that there is at least one x_12 for which x_12 will not work, which contradicts that For all x_12, x_12 will work. Therefore, the answer is no.