Consider the following premises. For all x_12, x_12 is a server if and only if x_12 will drink water. For all x_12, x_12 will drive a car if and only if x_12 is a janitor. There is at least one x_12 for which x_12 is a server if and only if x_12 will drive a car. For all x_12, x_12 will not drink water. Can we infer the following from them? If we can, name the inference rule being used: For all x_12, x_12 will not drink water.
That is one of the premises. Therefore, the answer is yes.