Hisashige Tanaka's robots could be able to serve tea, A.
Hypnagogic happens as a result of sleep deprivation, caffeine intake or stress. It usually happens during a transition between wakefulness and sleep
First, just simply do the usual for the letter as always, then introduce the three topics you're talking about and like it said: describe it or basically define it, list 3 facts, and your opinion.