Consider the following premises. For all x_16, x_16 will drink water if and only if x_16 is a mechanic. For all x_16, x_16 is a cashier if and only if x_16 will cook. For all x_16, if x_16 makes tea, then x_16 is a mechanic. For all x_16, x_16 will not cook. For all x_16, x_16 is a cashier or x_16 will make tea. Can we infer the following from them? For all x_16, x_16 will drink water.
 From the fact that for all x_16, x_16 is a cashier if and only if x_16 will cook, and that for all x_16, x_16 will not cook we can infer that for all x_16, x_16 is not a cashier. From the fact that for all x_16, x_16 will drink water if and only if x_16 is a mechanic we can infer that for all x_16, if x_16 were a mechanic, then x_16 is drinking water. From the fact that for all x_16, x_16 is a cashier or x_16 will make tea, and that for all x_16, x_16 is not a cashier we can infer that for all x_16, x_16 will make tea. From the fact that for all x_16, if x_16 makes tea, then x_16 is a mechanic, and that for all x_16, x_16 will make tea we can infer that for all x_16, x_16 is a mechanic. Finally, from the fact that for all x_16, if x_16 were a mechanic, then x_16 is drinking water, and that for all x_16, x_16 is a mechanic we can infer that for all x_16, x_16 will drink water. Therefore, the answer is yes.