What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is cold or Mary is reading a book. Susan is a soldier. If Mary reads a book, then Karen is taking a plane. If Karen takes a plane, then Jennifer is a lawyer. If it is cold, then Karen is taking a plane.
If Mary reads a book, then Jennifer is a lawyer. If it is cold, then Jennifer is a lawyer. Karen is taking a plane.