締約國

缔 = 帝 + 纟 : Caesar (帝) wants to have a close connection (缔) to Dorothy Gale (di). Literally. In the space station's bathroom (Ø4), he forms the close connection by closely joining (缔) her body to his with the help of a lot of silk worms (纟) he previously knotted (缔) together to form a rope.

约 = 勺 + 纟 : Marilyn Monroe is on a date with a silk worm in front of the elevator. Marilyn wants to show the silk worm around, and so she carries him around on a little silver spoon.

国 = 囗 + 玉 : Mnemonic symbol: a nation's flag. Let's say the Chinese flag.

In the observatory's kitchen (o2) Gitta Giraffe (gu) is practising her ballet performance. She got a whole crate (囗) full of jade bracelets (玉) and flags (国) and fixed one flag to each jade bracelet. This makes a perfect combination for throwing the ring with the flag waving behind it and catching the ring again after a few pirouettes.