Question: A 1997 expansion then doubled the space.
The expansion doubled the available retail space on the Strip.

Answer: it is not possible to tell

Question: Newsweek 's meaty package explains Heaven's Gate's daft cosmology and catalogs America's other doomsday sects.
Heaven's Gate's cosmology is explained by Newsweek's package.

Answer: yes

Question: Evans made numerous remarkable finds at the site, since it had been covered and left undisturbed following the 1350 b.c. disaster.
Evans was unable to make any conclusions at the site because it had been disturbed several times in the history.

Answer:
no