Consider the following premises. For all x_9, x_9 is a taxi driver or x_9 is not rich. If Barbara were a taxi driver, then Barbara is rich. Can we infer the following from them? If Barbara were rich, then Barbara is a taxi driver.
 From the fact that for all x_9, x_9 is a taxi driver or x_9 is not rich we can infer that for all x_9, if x_9 were rich, then x_9 is a taxi driver. Finally, from the fact that for all x_9, if x_9 were rich, then x_9 is a taxi driver we can infer that if Barbara were rich, then Barbara is a taxi driver. Therefore, the answer is yes.