Consider the following premises. For all x_6, if x_6 were a mechanic, then x_6 is not taking a plane. There is at least one x_6 for which if x_6 were a mechanic, then x_6 is reading a book. For all x_6, if x_6 reads a book, then x_6 is a mechanic. For all x_6, x_6 will take a plane. Can we infer the following from them? For all x_6, x_6 will read a book.
 From the fact that for all x_6, if x_6 reads a book, then x_6 is a mechanic, and that there is at least one x_6 for which if x_6 were a mechanic, then x_6 is reading a book we can infer that there is at least one x_6 for which x_6 will read a book if and only if x_6 is a mechanic. From the fact that for all x_6, if x_6 were a mechanic, then x_6 is not taking a plane, and that for all x_6, x_6 will take a plane we can infer that for all x_6, x_6 is not a mechanic. Finally, from the fact that there is at least one x_6 for which x_6 will read a book if and only if x_6 is a mechanic, and that for all x_6, x_6 is not a mechanic we can infer that there is at least one x_6 for which x_6 will not read a book, which contradicts that For all x_6, x_6 will read a book. Therefore, the answer is no.