+> drop keys
+
+OK
+
+> in
+
+You're in Barren Room.
+
+There is a golden chain locked to the wall!
+
+There is a little axe here.
+
+> unlock chain
+
+You have no keys!
+
+> out
+
+You're in front of Barren Room.
+
+There are some keys on the ground here.
+
+There is a contented-looking bear wandering about nearby.
+