What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_5 for which if x_5 climbs a mountain, then x_5 is a janitor. For all x_5, if x_5 reads a book, then x_5 is a janitor. For all x_5, x_5 will climb a mountain and x_5 will drink water.
For all x_5, x_5 will climb a mountain. For all x_5, x_5 will drink water.