Consider the following premises. For all x_9, x_9 is rich or x_9 is a poet. For all x_9, x_9 is not a taxi driver. For all x_9, if x_9 were a bartender, then x_9 is a taxi driver. There is at least one x_9 for which x_9 is rich if and only if x_9 is a bartender. Can we infer the following from them? For all x_9, x_9 is not a poet.
 From the fact that for all x_9, if x_9 were a bartender, then x_9 is a taxi driver, and that for all x_9, x_9 is not a taxi driver we can infer that for all x_9, x_9 is not a bartender. From the fact that there is at least one x_9 for which x_9 is rich if and only if x_9 is a bartender, and that for all x_9, x_9 is not a bartender we can infer that there is at least one x_9 for which x_9 is not rich. Finally, from the fact that for all x_9, x_9 is rich or x_9 is a poet, and that there is at least one x_9 for which x_9 is not rich we can infer that there is at least one x_9 for which x_9 is a poet, which contradicts that For all x_9, x_9 is not a poet. Therefore, the answer is no.