What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_4, if x_4 reads a book, then x_4 is an artist. For all x_4, x_4 is not a soldier. For all x_4, x_4 is a soldier if and only if x_4 will read a book. For all x_4, if x_4 were an artist, then x_4 is a soldier.
For all x_4, x_4 is not an artist. For all x_4, if x_4 reads a book, then x_4 is a soldier. For all x_4, if x_4 were a soldier, then x_4 is reading a book. For all x_4, if x_4 reads a book, then x_4 is a soldier. For all x_4, x_4 will not read a book.