Consider the following premises. There is at least one x_11 for which x_11 will drink water if and only if x_11 will take a plane. For all x_11, if x_11 were an artist, then x_11 is not a scientist. For all x_11, x_11 is a scientist and x_11 is poor. For all x_11, x_11 is an artist if and only if x_11 will drink water. Can we infer the following from them? If we can, name the inference rule being used: For all x_11, if x_11 were an artist, then x_11 is not a scientist.
That is one of the premises. Therefore, the answer is yes.