What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_12, x_12 is rich and x_12 is a taxi driver. There is at least one x_12 for which if x_12 were rich, then x_12 is a writer.
For all x_12, x_12 is rich. For all x_12, x_12 is a taxi driver.