Complex sentence: The 1990s also saw the reintroduction of the Bruno's banner on stores, this time as Bruno's Supercenters and Bruno's Food and Pharmacy, both of which were upper-class stores.
Split into simpler sentences: The 1990s also saw the reintroduction of the Bruno's banner on stores. This time Bruno's was Bruno's Supercenter and Bruno's Food and Pharmacy, both of which were upper-class stores.