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_6, if x_6 reads a book, then x_6 is a taxi driver. For all x_6, if x_6 were a politician, then x_6 is reading a book. For all x_6, x_6 is a politician.
For all x_6, x_6 will read a book can be inferred via the universal modus ponens rule. For all x_6, if x_6 were a politician, then x_6 is a taxi driver can be inferred via the universal transitivity rule.