Question: What was the family of Joachim II Hector, once Elector of the town where the lake of Helenesee is found?

full_context: Document 1: Huguenots: Frederick William, Elector of Brandenburg, invited Huguenots to settle in his realms, and a number of their descendants rose to positions of prominence in Prussia. Several prominent German military, cultural, and political figures were ethnic Huguenot, including poet Theodor Fontane, General Hermann von François, the hero of the First World War Battle of Tannenberg, Luftwaffe General and fighter ace Adolf Galland, Luftwaffe flying ace Hans-Joachim Marseille, and famed U-boat captain Lothar von Arnauld de la Perière. The last Prime Minister of the (East) German Democratic Republic, Lothar de Maizière, is also a descendant of a Huguenot family, as is the German Federal Minister of the Interior, Thomas de Maizière.
Document 2: Helenesee: Helenesee is a lake in Brandenburg, Germany. Its surface area is ca. 250 ha. With a depth of 56.63 m, the Helenseee is the second deepest lake in Brandenburg, only surpassed by the lake Großer Stechlinsee. It is situated approximately 8 kilometers in the south of Frankfurt (Oder). It was formed after the flooding of a former open-pit mining which started in 1958.
Document 3: Großer Wünsdorfer See: Großer Wünsdorfer See is a lake in Brandenburg, Germany. At an elevation of 39 m, its surface area is 180 ha. It is located at Wünsdorf, an "Ortsteil" of the town of Zossen.
Document 4: Schleswig-Holstein Wadden Sea National Park: With an area of 4410 km ² it is by far the largest national park in Germany. Some 68% of its area is permanently under water and 30% is periodically dry. The land element consists mainly of salt marshes. Since 1990, the national park, including the North Frisian "Halligen", has been designated as a UNESCO recognised biosphere. Together with other German and Dutch Wadden Sea areas it became a UNESCO World Heritage Site on 26 June 2009.
Document 5: Albert Wolfgang, Count of Hohenlohe-Langenburg: He was head of the House of Hohenlohe-Langenburg and introduced primogeniture in Langenburg in 1699. This meant the oldest son would inherit the entire county, and younger sons would only inherit if the oldest were to die childless. From then on, younger sons would mostly embark on military careers, for example, in the imperial army, or in friendly nations.
Document 6: Alatsee: Alatsee is a meromictic lake in Ostallgäu, Bavaria, Germany. At an elevation of 868.0 m, its surface area is 12.00 ha. This lake supposedly holds "Hitler's gold". Many divers have died or disappeared mysteriously in this lake due to the toxicity of the organisms living in this lake. These organisms create the "blood cloud " that occurs quite abundantly throughout the year.
Document 7: Joachim II Hector, Elector of Brandenburg: Joachim II ( or "Hektor"; 13 January 1505 – 3 January 1571) was a Prince-elector of the Margraviate of Brandenburg (1535–1571), the sixth member of the House of Hohenzollern. Joachim II was the eldest son of Joachim I Nestor, Elector of Brandenburg and his wife Elizabeth of Denmark, Norway, and Sweden. He received the cognomen Hector after the Trojan prince and warrior for his qualities and prowess.
Document 8: Upper Harz Ponds: The Upper Harz Ponds () are found mainly around the mining town of Clausthal-Zellerfeld and the nearby villages of Buntenbock and Hahnenklee in the Upper Harz mountains of central Germany. There are around 70 ponds in total, both large and small. They were built by the miners of the Upper Harz, mostly between the 16th and 18th centuries, and are important components of the cultural monument known as the Upper Harz Water Regale - a network of dams, ditches, ponds and tunnels that was built to supply much-needed water power for the mining industry in the Harz mountains. Today the Water Regale is being proposed as a UNESCO World Heritage Site. About half the dammed ponds are classified today as reservoirs, but they have now become characteristic features of the Upper Harz and are home to some extremely rare plant and animal species.
Document 9: Georgenfelder Hochmoor: The Georgenfelder Hochmoor is a raised bog ("Hochmoor") in the German Ore Mountains of central Europe, not far from Zinnwald-Georgenfeld. It is part of a larger bog or moor complex, that lies to the south, mainly on the far side of the Germany's national border in the Czech Republic and which, since time immemorial, has been known simply as "The Lake" ("Die See"). The Georgenfelder Hochmoor is one of the oldest nature reserves in Saxony.
Document 10: Prince Johann Georg of Hohenzollern: Prince Johann Georg was the sixth child of Frederick, Prince of Hohenzollern (Heiligendamm 30 August 1891 – Krauchenwies 6 February 1965) and his wife Princess Margarete Karola of Saxony (Dresden 24 January 1900 – Freiburg im Breisgau 16 October 1962).
Document 11: Losheim am See: Losheim am See is a municipality in the district Merzig-Wadern, in Saarland, Germany. It is situated on the southern ridge of the Hunsrück, approximately 10 kilometers northeast of Merzig, and 35 kilometers northwest of Saarbrücken. In 1974 a reservoir was created in the north of Losheim that has become a popular spot for recreational activities such as hiking and swimming.
Document 12: Großer Jasmunder Bodden: The Großer Jasmunder Bodden belongs to the Northern Rügener Boddens and is a water body on the southern edge of the Baltic Sea in the German state of Mecklenburg-Vorpommern. It is a "bodden", a type of lagoon that occurs in northern Europe especially on the coast of Pomerania. It lies within the island of Rügen, is around 14 kilometres long, an average of six kilometres wide and is up to nine metres deep with an average depth of 5.3m. The Großer Jasmunder Bodden has an area of 58.6 square kilometres; if the "Breetzer Bodden", "Breeger Bodden", "Lebbiner Bodden", "Neuendorfer Wiek" and "Tetzitzer See" are included the total area of water comes to over 94 square kilometres.
Document 13: Joachim, 6th Prince Murat: Joachim Murat, 6th Prince Murat (Paris, Île-de-France, France, August 6, 1885 – Paris, Île-de-France, France May 11, 1938), was a member of the Bonaparte-Murat family.
Document 14: East Prussia: Although Brandenburg was a part of the Holy Roman Empire, the Prussian lands were not within the Holy Roman Empire and were with the administration by the Teutonic Order grandmasters under jurisdiction of the Emperor. In return for supporting Emperor Leopold I in the War of the Spanish Succession, Elector Frederick III was allowed to crown himself "King in Prussia" in 1701. The new kingdom ruled by the Hohenzollern dynasty became known as the Kingdom of Prussia. The designation "Kingdom of Prussia" was gradually applied to the various lands of Brandenburg-Prussia. To differentiate from the larger entity, the former Duchy of Prussia became known as Altpreußen ("Old Prussia"), the province of Prussia, or "East Prussia".
Document 15: East Prussia: The Administrator of Prussia, the grandmaster of the Teutonic Order Maximilian III, son of emperor Maximilian II died in 1618. When Maximilian died, Albert's line died out, and the Duchy of Prussia passed to the Electors of Brandenburg, forming Brandenburg-Prussia. Taking advantage of the Swedish invasion of Poland in 1655, and instead of fulfilling his vassal's duties towards the Polish Kingdom, by joining forces with the Swedes and subsequent treaties of Wehlau, Labiau, and Oliva, Elector and Duke Frederick William succeeded in revoking king of Poland's sovereignty over the Duchy of Prussia in 1660. The absolutist elector also subdued the noble estates of Prussia.
ground_truth: House of Hohenzollern
sub_queries: Helenesee >> located in the administrative territorial entity Answer: Brandenburg
Joachim II Hector, Elector of Brandenburg >> family Answer: House of Hohenzollern