What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is raining or it is sunny. It is late. If Elisabeth climbs a mountain, then it is not late. It is not raining or it is snowing. It is not sunny.
Elisabeth is not climbing a mountain. It is late and it is not sunny. It is not sunny and it is late. It is sunny or it is snowing.