Consider the following premises. For all x_5, x_5 will sleep. For all x_5, x_5 is happy. For all x_5, if x_5 goes running, then x_5 is a musician. For all x_5, if x_5 sleeps, then x_5 is running. Can we infer the following from them? There is at least one x_5 for which either x_5 is a musician or x_5 is happy are not true.
 From the fact that for all x_5, if x_5 sleeps, then x_5 is running, and that for all x_5, if x_5 goes running, then x_5 is a musician we can infer that for all x_5, if x_5 sleeps, then x_5 is a musician. From the fact that for all x_5, if x_5 sleeps, then x_5 is a musician, and that for all x_5, x_5 will sleep we can infer that for all x_5, x_5 is a musician. Finally, from the fact that for all x_5, x_5 is a musician, and that for all x_5, x_5 is happy we can infer that for all x_5, x_5 is a musician and x_5 is happy, which contradicts that There is at least one x_5 for which either x_5 is a musician or x_5 is happy are not true. Therefore, the answer is no.