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: For all x_10, if x_10 were a politician, then x_10 is reading a book. For all x_10, if x_10 were a politician, then x_10 is reading a book. For all x_10, x_10 is a politician if and only if x_10 will read a book.
For all x_10, if x_10 were a politician, then x_10 is reading a book can be inferred via the universal biconditional elimination rule. For all x_10, if x_10 reads a book, then x_10 is a politician can be inferred via the universal biconditional elimination rule.