What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_15, x_15 will drive a car. There is at least one x_15 for which x_15 will climb a mountain. For all x_15, x_15 will drink water if and only if x_15 will climb a mountain.
There is at least one x_15 for which x_15 will climb a mountain and x_15 will drive a car. There is at least one x_15 for which x_15 will drive a car and x_15 will climb a mountain. For all x_15, if x_15 drinks water, then x_15 is climbing a mountain. For all x_15, if x_15 climbs a mountain, then x_15 is drinking water.