Consider the following premises. There is at least one z for which z will take a plane if and only if z will read a book. For all z, z is bored or z will read a book. For all z, if z were bored, then z is taking a plane. Can we infer the following from them? There is at least one z for which z will take a plane.
 From the fact that there is at least one z for which z will take a plane if and only if z will read a book we can infer that there is at least one z for which if z reads a book, then z is taking a plane. Finally, from the fact that for all z, if z were bored, then z is taking a plane, that there is at least one z for which if z reads a book, then z is taking a plane, and that for all z, z is bored or z will read a book we can infer that there is at least one z for which z will take a plane. Therefore, the answer is yes.