What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_9, x_9 is an astronaut. For all x_9, x_9 will read a book or x_9 is rich. For all x_9, if x_9 were rich, then x_9 is taking a plane. For all x_9, if x_9 reads a book, then x_9 is taking a plane.
For all x_9, x_9 will take a plane.