What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If it is cold, then Joseph is reading a book. Joseph is not reading a book. It is raining if and only if Michael is a police officer. Michael is not a police officer.
It is not cold. Joseph is not reading a book and Michael is not a police officer. Michael is not a police officer and Joseph is not reading a book. If it rains, then Michael is a police officer. If Michael were a police officer, then it is raining. It is not raining.