What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: If William sleeps, then Michael is reading a book. For all x_17, if x_17 makes tea, then x_17 is reading a book. Michael is making tea or William is sleeping. It is windy. For all x_17, if x_17 reads a book, then x_17 is making tea.
For all x_17, x_17 will make tea if and only if x_17 will read a book can be inferred via the universal biconditional introduction rule. For all x_17, x_17 will read a book if and only if x_17 will make tea can be inferred via the universal biconditional introduction rule.