空
=
工
+
穴
:
In front of the engine, Karl Koala found some very special cave paintings. Using steel beams he constructs a protective cover. He also installs air conditioning to make the best environment possible to preserve the cave paintings.
姐
=
且
+
女
:
Bessie Coleman (女) and Joan of Arc (ji) have been searching through an ancestry archive for days and days. Inside of the elevator (e3) they stand in front of a shelf (且) which contains thousands of ancestry records, and after they worked very hard, they found out that through some complicated lineage they are older sisters (姐) to each other.