premise: Dr. H. V. Hilprecht , Professor of Assyrian at the University of Pennsylvania , dreamed that a Babylonian priest , associated with the king Kurigalzu , ( 1300 B.C. . ) escorted him to the treasure <mask> of the temple of Bel , gave him six novel points of information about a certain broken relic , and corrected an error in its identification .
hypothesis: the proper context for <mask> here should be a natural or artificial enclosed space