What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Thomas were a cashier, then Patricia is climbing a mountain. For all x_9, x_9 is excited if and only if x_9 will climb a mountain.
For all x_9, if x_9 were excited, then x_9 is climbing a mountain. For all x_9, if x_9 climbs a mountain, then x_9 is excited.