What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Karen is not driving a car. Richard is reading a book if and only if Karen is a politician. It is not raining or Karen is a politician. It is raining or Karen is driving a car.
Karen is driving a car or Karen is a politician. If Richard reads a book, then Karen is a politician. If Karen were a politician, then Richard is reading a book.