+> frob grate
+
+Sorry, I don't know the word "FROB".
+
+> read grate
+
+I'm afraid I don't understand.
+
+> grate
+
+What do you want to do with the grate?
+
+> building
+
+I don't know how to apply that word here.
+
+You're inside building.
+
+There are some keys on the ground here.
+
+There is a shiny brass lamp nearby.
+
+There is a bottle of water here.
+