Consider the following premises. For all x_2, x_2 is poor. For all x_2, x_2 is a taxi driver. For all x_2, if x_2 were a taxi driver, then x_2 is making tea. Can we infer the following from them? There is at least one x_2 for which x_2 will not make tea.
 From the fact that for all x_2, if x_2 were a taxi driver, then x_2 is making tea, and that for all x_2, x_2 is a taxi driver we can infer that for all x_2, x_2 will make tea. From the fact that for all x_2, x_2 will make tea, and that for all x_2, x_2 is poor we can infer that for all x_2, x_2 will make tea and x_2 is poor. Finally, from the fact that for all x_2, x_2 will make tea and x_2 is poor we can infer that for all x_2, x_2 will make tea, which contradicts that There is at least one x_2 for which x_2 will not make tea. Therefore, the answer is no.