What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If William were bored, then Mary is making tea. For all y_3, y_3 will make tea if and only if y_3 will read a book.
For all y_3, if y_3 makes tea, then y_3 is reading a book. For all y_3, if y_3 reads a book, then y_3 is making tea.