What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is late if and only if it is cloudy. If Jessica were curious, then it is cloudy. If Robert were excited, then Jessica is curious. Robert is excited.
Jessica is curious. If Robert were excited, then it is cloudy. If it is late, then it is cloudy. If it is cloudy, then it is late.