What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_12, x_12 is happy if and only if x_12 will read a book. There is at least one x_12 for which x_12 is not happy. For all x_12, if x_12 cooks, then x_12 is reading a book.
For all x_12, if x_12 were happy, then x_12 is reading a book. For all x_12, if x_12 reads a book, then x_12 is happy. There is at least one x_12 for which x_12 will not read a book.