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 will work if and only if x will sleep. For all x, x will read a book if and only if x will make tea. For all x, x will work if and only if x will read a book. For all x, x will not sleep.
For all x, if x works, then x is sleeping. For all x, if x reads a book, then x is making tea. For all x, if x works, then x is reading a book. For all x, if x sleeps, then x is working. For all x, if x makes tea, then x is reading a book. For all x, if x reads a book, then x is working. For all x, x will not work.