What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y, y will read a book if and only if y is curious. For all y, y is not curious. For all y, if y reads a book, then y is a sailor. There is at least one y for which if y were a sailor, then y is reading a book.
There is at least one y for which y is a sailor if and only if y will read a book. There is at least one y for which y will read a book if and only if y is a sailor. For all y, if y reads a book, then y is curious. For all y, if y were curious, then y is reading a book. For all y, y will not read a book.