Consider the following premises. If Elisabeth reads a book, then Jennifer is a police officer. If Jennifer were a police officer, then Elisabeth is reading a book. Elisabeth is not reading a book. It is windy. Can we infer the following from them? Jennifer is a police officer.
 From the fact that if Elisabeth reads a book, then Jennifer is a police officer, and that if Jennifer were a police officer, then Elisabeth is reading a book we can infer that Elisabeth is reading a book if and only if Jennifer is a police officer. Finally, from the fact that Elisabeth is reading a book if and only if Jennifer is a police officer, and that Elisabeth is not reading a book we can infer that Jennifer is not a police officer, which contradicts that Jennifer is a police officer. Therefore, the answer is no.