Consider the following premises. For all x_5, x_5 will play tennis. For all x_5, if x_5 were sad, then x_5 is making tea. For all x_5, if x_5 plays tennis, then x_5 is sad. Can we infer the following from them? Robert is making tea.
 From the fact that for all x_5, if x_5 plays tennis, then x_5 is sad, and that for all x_5, if x_5 were sad, then x_5 is making tea we can infer that for all x_5, if x_5 plays tennis, then x_5 is making tea. From the fact that for all x_5, if x_5 plays tennis, then x_5 is making tea, and that for all x_5, x_5 will play tennis we can infer that for all x_5, x_5 will make tea. Finally, from the fact that for all x_5, x_5 will make tea we can infer that Robert is making tea. Therefore, the answer is yes.