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 curious. For all x, x is not a taxi driver. For all x, if x were curious, then x is reading a book. For all x, if x were a taxi driver, then x is reading a book. For all x, if x reads a book, then x is a taxi driver.
For all x, x will not read a book. For all x, if x were curious, then x is a taxi driver. For all x, if x were a taxi driver, then x is curious. For all x, x will read a book if and only if x is curious. For all x, x is curious if and only if x will read a book. For all x, x is a taxi driver if and only if x will read a book. For all x, x will read a book if and only if x is a taxi driver.