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: Michael is reading a book if and only if Richard is a server. For all x_2, x_2 will read a book.
If Michael reads a book, then Richard is a server can be inferred via the biconditional elimination rule. If Richard were a server, then Michael is reading a book can be inferred via the biconditional elimination rule.