Consider the following premises. For all x_2, x_2 is a mechanic. For all x_2, x_2 will drink water. For all x_2, x_2 will take a plane. Can we infer the following from them? For all x_2, x_2 will drink water and x_2 will take a plane.
 From the fact that for all x_2, x_2 will take a plane, and that for all x_2, x_2 is a mechanic we can infer that for all x_2, x_2 will take a plane and x_2 is a mechanic. From the fact that for all x_2, x_2 will take a plane and x_2 is a mechanic we can infer that for all x_2, x_2 will take a plane. Finally, from the fact that for all x_2, x_2 will drink water, and that for all x_2, x_2 will take a plane we can infer that for all x_2, x_2 will drink water and x_2 will take a plane. Therefore, the answer is yes.