What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If John were a poet, then Linda is a sailor. For all y, y is a sailor if and only if y will read a book. Linda is not reading a book.
For all y, if y were a sailor, then y is reading a book. For all y, if y reads a book, then y is a sailor.