Complex sentence: The Berlin Philharmonic (is an orchestra based in Berlin, Germany and is consistently ranked as one of the best orchestras in the world. Formerly), its primary concert venue is the Philharmonie, located in the Kulturforum area of the city.
Split into simpler sentences: The Berlin Philharmonic (formerly) is an orchestra based in Berlin, Germany. Its primary concert venue is the Philharmonie, located in the Kulturforum area of the city.