+> lock chain
+
+It was already locked.
+
+> unlock chain
+
+The chain is now unlocked.
+
+> take bear
+
+OK
+
+> inven
+
+You are currently holding the following:
+Set of keys
+Brass lantern
+Egg-sized emerald
+Glistening pearl
+
+You are being followed by a very large, tame bear.
+
+> take chain
+
+OK
+
+> fork
+
+You are being followed by a very large, tame bear.
+
+The path forks here. The left fork leads northeast. A dull rumbling
+seems to get louder in that direction. The right fork leads southeast
+down a gentle slope. The main corridor enters from the west.
+
+> lock chain
+
+There is nothing here to which the chain can be locked.
+