What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is cloudy if and only if Susan is reading a book. It is not cloudy. If it is cold, then Susan is reading a book. If Susan reads a book, then it is windy. If it is windy, then it is cold.
If it is cold, then it is windy. If Susan reads a book, then it is cold. If it is windy, then Susan is reading a book. If it is cloudy, then Susan is reading a book. If Susan reads a book, then it is cloudy. Susan is not reading a book.