What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_9, x_9 will make tea if and only if x_9 will read a book. Linda is not making tea.
For all x_9, if x_9 makes tea, then x_9 is reading a book. For all x_9, if x_9 reads a book, then x_9 is making tea.