Question: Bad Köstritz is known for what variety of dark lager?

Context paragraphs:
Velebitsko: Velebitsko is a popular beer brand from Croatia, brewed near Gospić on the Velebit mountains in Lika by the Pivovara Ličanka.  The name is used for the pale lager which has an alcohol content of 5.1% and for the dark lager which has an alcohol content of 6.0%.  Known for its high quality brewery, the dark beer has been voted best beer by an English beer expert website.

Pu'er tea: Pu'er or pu-erh is a variety of fermented tea produced in Yunnan province, China, and named after the town of Pu'er.  Fermentation in the context of tea production involves microbial fermentation and oxidation of the tea leaves, after they have been dried and rolled.  This process is a Chinese specialty and produces tea known as "hēichá" (黑茶), commonly translated as dark, or black tea.  This type of tea is different from what in the West is known as "black tea", which in China is called "hóngchá" (红茶) i.e. "red tea".  The best known variety of this category of tea is pu'er from Yunnan Province, named after the trading post for dark tea during imperial China.

Kamenitza: Kamenitza (Bulgarian: Каменица ) is one of the top-selling Bulgarian beer companies, based in the city of Plovdiv.  Established in 1881 and owned by Molson Coors, the brewery has a wide variety of lager and dark beers.  Its slogan is "Mujete znayat zashto" which translates to "Men know why."

Lager: Lager (German: "storeroom or warehouse" ) () is a type of beer that originates from the part of the Austrian Empire that is now known as the Czech Republic.  It is conditioned at low temperatures, normally at the brewery.  It may be pale, golden, amber, or dark.

Goldstar (beer): Goldstar (Hebrew: גולדסטאר) is an Israeli brand of 4.9% abv lager brewed by Tempo in Netanya.  It is marketed as a dark lager beer ("בירה לאגר כהה "), though it is amber in appearance.

Dark matter in fiction: Dark matter is defined as hypothetical matter that is undetectable by its emitted radiation, but whose presence can be inferred from gravitational effects on visible matter.  It has been used in a variety of fictional media, including computer and video games and books.  In such cases, dark matter is usually attributed extraordinary physical or magical properties.  Such descriptions are often inconsistent with the known properties of dark matter proposed in physics and cosmology.  For example in computer games, it is often used as material for making weapons and items, and is usually depicted as black or a similar color.

Schwarzbier: Schwarzbier , or black beer, is a dark lager made in Germany.  They tend to have an opaque, black colour with hints of chocolate or coffee flavours, and are generally around 5% abv.  They are similar to stout in that they are made from roasted malt, which gives them their dark colour.

Spoetzl Brewery: Spoetzl Brewery is a brewery located in Shiner, Texas, U.S.  The brewery is the oldest independent brewery in Texas.  It produces a diverse line of Shiner Beers, including their flagship Shiner Bock, a dark lager that is now distributed in 49 states.  The brewery is owned by the Gambrinus Company, a family-owned company based in San Antonio.

Bad Köstritz: Bad Köstritz is a town in the district of Greiz, in Thuringia, Germany.  It is situated on the White Elster river, 7 km northwest of Gera.  Bad Köstritz is known for the Köstritzer brewery and its Schwarzbier (black beer).

Köstritzer: The Köstritzer brewery, founded in 1543, is one of the oldest producers of Schwarzbier (black lager) in Germany.  It is located in Bad Köstritz, which is close to Gera in Thuringia.

Supporting paragraphs: Bad Köstritz Schwarzbier
Answer: Schwarzbier