What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_11, x_11 will play a game. For all x_11, x_11 is a server if and only if x_11 is a janitor. For all x_11, x_11 is a janitor and x_11 will read a book.
For all x_11, x_11 is a janitor. For all x_11, x_11 will read a book. For all x_11, if x_11 were a server, then x_11 is a janitor. For all x_11, if x_11 were a janitor, then x_11 is a server.