Consider the following premises. For all y, y will take a plane. For all y, y will make tea. Can we infer the following from them? If we can, name the inference rule being used: Jessica is making tea.
 From the fact that for all y, y will take a plane, and that for all y, y will make tea we can infer that for all y, y will take a plane and y will make tea via universal conjunction. From the fact that for all y, y will take a plane and y will make tea we can infer that Jessica is taking a plane and Jessica is making tea via universal instantiation. Finally, from the fact that Jessica is taking a plane and Jessica is making tea we can infer that Jessica is making tea via simplification. Therefore, the answer is yes.