Consider the following premises. For all x_14, if x_14 were a writer, then x_14 is a musician. There is at least one x_14 for which x_14 is a musician if and only if x_14 will cook. For all x_14, x_14 is a writer or x_14 will cook. For all x_14, if x_14 were a musician, then x_14 is sleeping. Can we infer the following from them? For all x_14, x_14 will not sleep.
 From the fact that there is at least one x_14 for which x_14 is a musician if and only if x_14 will cook we can infer that there is at least one x_14 for which if x_14 cooks, then x_14 is a musician. From the fact that for all x_14, if x_14 were a writer, then x_14 is a musician, that there is at least one x_14 for which if x_14 cooks, then x_14 is a musician, and that for all x_14, x_14 is a writer or x_14 will cook we can infer that there is at least one x_14 for which x_14 is a musician. Finally, from the fact that for all x_14, if x_14 were a musician, then x_14 is sleeping, and that there is at least one x_14 for which x_14 is a musician we can infer that there is at least one x_14 for which x_14 will sleep, which contradicts that For all x_14, x_14 will not sleep. Therefore, the answer is no.