What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is raining if and only if Michael is driving a car. Sarah is a soldier. If Richard climbs a mountain, then Michael is driving a car. It is not raining.
Sarah is a soldier and it is not raining. It is not raining and Sarah is a soldier. If it rains, then Michael is driving a car. If Michael drives a car, then it is raining. Michael is not driving a car.