Consider the following premises. For all x, if x were a sailor, then x is poor. James is a sailor. Can we infer the following from them? James is not poor.
 From the fact that for all x, if x were a sailor, then x is poor we can infer that if James were a sailor, then James is poor. Finally, from the fact that if James were a sailor, then James is poor, and that James is a sailor we can infer that James is poor, which contradicts that James is not poor. Therefore, the answer is no.