Consider the following premises. For all x_6, x_6 is an artist or x_6 will not drink water. For all x_6, x_6 is not an artist. There is at least one x_6 for which x_6 will take a plane if and only if x_6 will drink water. Can we infer the following from them? For all x_6, x_6 will take a plane.
 From the fact that for all x_6, x_6 is an artist or x_6 will not drink water we can infer that for all x_6, if x_6 drinks water, then x_6 is an artist. From the fact that for all x_6, if x_6 drinks water, then x_6 is an artist, and that for all x_6, x_6 is not an artist we can infer that for all x_6, x_6 will not drink water. Finally, from the fact that there is at least one x_6 for which x_6 will take a plane if and only if x_6 will drink water, and that for all x_6, x_6 will not drink water we can infer that there is at least one x_6 for which x_6 will not take a plane, which contradicts that For all x_6, x_6 will take a plane. Therefore, the answer is no.