Complex sentence: The brewery is famous nationwide for "Stones Bitter", originally brewed at the Cannon Brewery, Sheffield since 1948, until its closure in 1999, and described by the "Yorkshire Post" as "one of Sheffield's most famous exports".
Split into simpler sentences: The brewery is famous nationwide for "Stones Bitter", which was originally brewed at the Cannon Brewery, Sheffield from 1948, until its closure in 1999. The "Yorkshire Post" described the beer as "one of Sheffield's most famous exports".