Consider the following premises. For all x_8, x_8 will drink water if and only if x_8 is fast. There is at least one x_8 for which x_8 is fast or x_8 is rich. For all x_8, x_8 will not drink water. Can we infer the following from them? For all x_8, x_8 is not rich.
 From the fact that for all x_8, x_8 will drink water if and only if x_8 is fast we can infer that for all x_8, if x_8 were fast, then x_8 is drinking water. From the fact that for all x_8, if x_8 were fast, then x_8 is drinking water, and that for all x_8, x_8 will not drink water we can infer that for all x_8, x_8 is not fast. Finally, from the fact that there is at least one x_8 for which x_8 is fast or x_8 is rich, and that for all x_8, x_8 is not fast we can infer that there is at least one x_8 for which x_8 is rich, which contradicts that For all x_8, x_8 is not rich. Therefore, the answer is no.