Consider the following premises. For all x_8, x_8 will not read a book. For all x_8, x_8 is a bartender if and only if x_8 will make tea. For all x_8, x_8 is a bartender if and only if x_8 will read a book. Can we infer the following from them? There is at least one x_8 for which x_8 will make tea.
 From the fact that for all x_8, x_8 is a bartender if and only if x_8 will make tea we can infer that for all x_8, if x_8 makes tea, then x_8 is a bartender. From the fact that for all x_8, x_8 is a bartender if and only if x_8 will read a book, and that for all x_8, x_8 will not read a book we can infer that for all x_8, x_8 is not a bartender. Finally, from the fact that for all x_8, if x_8 makes tea, then x_8 is a bartender, and that for all x_8, x_8 is not a bartender we can infer that for all x_8, x_8 will not make tea, which contradicts that There is at least one x_8 for which x_8 will make tea. Therefore, the answer is no.