Consider the following premises. For all x_11, x_11 will read a book if and only if x_11 will take a plane. For all x_11, x_11 will read a book if and only if x_11 will take a plane. Can we infer the following from them? If we can, name the inference rule being used: The fact that Elisabeth reads a book does not imply that Elisabeth is taking a plane.
That contradicts the premises. Therefore the answer is no.