Consider the following premises. For all x_10, if x_10 takes a plane, then x_10 is reading a book. For all x_10, if x_10 reads a book, then x_10 is taking a plane. There is at least one x_10 for which x_10 is a poet if and only if x_10 will take a plane. Can we infer the following from them? There is at least one x_10 for which if x_10 reads a book, then x_10 is a poet.
 From the fact that for all x_10, if x_10 reads a book, then x_10 is taking a plane, and that for all x_10, if x_10 takes a plane, then x_10 is reading a book we can infer that for all x_10, x_10 will read a book if and only if x_10 will take a plane. From the fact that for all x_10, x_10 will read a book if and only if x_10 will take a plane we can infer that for all x_10, if x_10 reads a book, then x_10 is taking a plane. From the fact that there is at least one x_10 for which x_10 is a poet if and only if x_10 will take a plane we can infer that there is at least one x_10 for which if x_10 takes a plane, then x_10 is a poet. Finally, from the fact that for all x_10, if x_10 reads a book, then x_10 is taking a plane, and that there is at least one x_10 for which if x_10 takes a plane, then x_10 is a poet we can infer that there is at least one x_10 for which if x_10 reads a book, then x_10 is a poet. Therefore, the answer is yes.