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_8 for which x_8 is an astronaut or x_8 will drink water. For all x_8, x_8 will drink water if and only if x_8 will climb a mountain. For all x_8, x_8 is not an astronaut.
There is at least one x_8 for which x_8 will drink water. For all x_8, if x_8 drinks water, then x_8 is climbing a mountain. For all x_8, if x_8 climbs a mountain, then x_8 is drinking water.