Consider the following premises. For all x_5, if x_5 were a scientist, then x_5 is reading a book. For all x_5, if x_5 were poor, then x_5 is taking a plane. For all x_5, if x_5 takes a plane, then x_5 is a scientist. For all x_5, if x_5 reads a book, then x_5 is playing squash. Can we infer the following from them? There is at least one x_5 for which the fact that x_5 were poor does not imply that x_5 is playing squash.
 From the fact that for all x_5, if x_5 were a scientist, then x_5 is reading a book, and that for all x_5, if x_5 reads a book, then x_5 is playing squash we can infer that for all x_5, if x_5 were a scientist, then x_5 is playing squash. From the fact that for all x_5, if x_5 were poor, then x_5 is taking a plane, and that for all x_5, if x_5 takes a plane, then x_5 is a scientist we can infer that for all x_5, if x_5 were poor, then x_5 is a scientist. Finally, from the fact that for all x_5, if x_5 were poor, then x_5 is a scientist, and that for all x_5, if x_5 were a scientist, then x_5 is playing squash we can infer that for all x_5, if x_5 were poor, then x_5 is playing squash, which contradicts that There is at least one x_5 for which the fact that x_5 were poor does not imply that x_5 is playing squash. Therefore, the answer is no.