Consider the following premises. There is at least one x_5 for which x_5 is a sailor or x_5 will cook. For all x_5, if x_5 were sad, then x_5 is poor. For all x_5, if x_5 were a sailor, then x_5 is sad. For all x_5, x_5 is not poor. Can we infer the following from them? For all x_5, x_5 will not cook.
 From the fact that for all x_5, if x_5 were a sailor, then x_5 is sad, and that for all x_5, if x_5 were sad, then x_5 is poor we can infer that for all x_5, if x_5 were a sailor, then x_5 is poor. From the fact that for all x_5, if x_5 were a sailor, then x_5 is poor, and that for all x_5, x_5 is not poor we can infer that for all x_5, x_5 is not a sailor. Finally, from the fact that there is at least one x_5 for which x_5 is a sailor or x_5 will cook, and that for all x_5, x_5 is not a sailor we can infer that there is at least one x_5 for which x_5 will cook, which contradicts that For all x_5, x_5 will not cook. Therefore, the answer is no.