Consider the following premises. For all x_14, if x_14 drinks water, then x_14 is a sailor. If Jennifer were a server, then Richard is a sailor. Richard is drinking water or Jennifer is a server. Can we infer the following from them? Richard is not a sailor.
 From the fact that for all x_14, if x_14 drinks water, then x_14 is a sailor we can infer that if Richard drinks water, then Richard is a sailor. Finally, from the fact that if Richard drinks water, then Richard is a sailor, that if Jennifer were a server, then Richard is a sailor, and that Richard is drinking water or Jennifer is a server we can infer that Richard is a sailor, which contradicts that Richard is not a sailor. Therefore, the answer is no.