What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If it is windy, then James is happy. It is raining if and only if it is windy. It is snowing if and only if James is happy. It is not snowing.
If it rains, then it is windy. If it snows, then James is happy. If it is windy, then it is raining. If James were happy, then it is snowing. James is not happy.