What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x, x is a poet if and only if x will read a book. For all x, if x reads a book, then x is a poet. There is at least one x for which if x were a poet, then x is reading a book.
There is at least one x for which x is a poet if and only if x will read a book. There is at least one x for which x will read a book if and only if x is a poet. For all x, if x were a poet, then x is reading a book. For all x, if x reads a book, then x is a poet.