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, if x_9 were a server, then x_9 is playing squash. For all x_9, if x_9 climbs a mountain, then x_9 is playing squash. For all x_9, x_9 is rich. For all x_9, x_9 will climb a mountain or x_9 is a server.
For all x_9, x_9 will play squash.