What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If it is windy, then Elisabeth is fast. If Elisabeth were fast, then Barbara is reading a book. It is late if and only if Karen is an artist. If Barbara reads a book, then Karen is an artist. Barbara is not reading a book. If Karen were an artist, then it is windy.
Elisabeth is not fast. If it is windy, then Barbara is reading a book. If Elisabeth were fast, then Karen is an artist. If Barbara reads a book, then it is windy. If Karen were an artist, then Elisabeth is fast. If it is late, then Karen is an artist. If Karen were an artist, then it is late.