Consider the following premises. For all y, y is a sailor if and only if y is a police officer. Charles is not a musician. If Charles were a musician, then Linda is a police officer. If Linda were a police officer, then Charles is a musician. Can we infer the following from them? Linda is not a sailor.
 From the fact that for all y, y is a sailor if and only if y is a police officer we can infer that Linda is a sailor if and only if Linda is a police officer. From the fact that if Charles were a musician, then Linda is a police officer, and that if Linda were a police officer, then Charles is a musician we can infer that Charles is a musician if and only if Linda is a police officer. From the fact that Charles is a musician if and only if Linda is a police officer, and that Charles is not a musician we can infer that Linda is not a police officer. Finally, from the fact that Linda is a sailor if and only if Linda is a police officer, and that Linda is not a police officer we can infer that Linda is not a sailor. Therefore, the answer is yes.