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