Question: Sooneck Castle is located in he upper middle valley of a European river that ventually empties into what?

Context paragraphs:
Banawali: Banawali (Devanagari: बन्वालि) is an archaeological site belonging to Indus Valley Civilization period in Fatehabad district, Haryana, India and is located about 120 km northeast of Kalibangan and 16 km from Fatehabad.  Banawali, which is earlier called Vanavali, is on the left banks of dried up Sarasvati River.  Comparing to Kalibangan, which was a town established in lower middle valley of dried up Sarasvathi River, Banawali was built over upper middle valley of Sarasvathi River.

Sooneck Castle: Sooneck Castle (German: "Burg Sooneck" ) (also known as Saneck or Sonneck, previously also known as Schloss Sonneck) is a castle in the upper middle valley of the Rhine, in the Mainz-Bingen district of Rhineland-Palatinate, Germany.  It is located near the village of Niederheimbach between Bingen and Bacharach.

Osmore River: Osmore River (also Moquegua, Ilo, or Tumilaca) system flows northeast to southwest in the Moquegua Region of southern coastal Peru.  The river has its origin in the snow peaks of the Chuqi Ananta and Arundane mountains, at an elevation of 5100 m (above sea level).  It changes names as it descends from the Andes: From its origin it is called the Moquegua, then Osmore in the middle valley as Rio Coscori and Rio Tumilaca including where the river disappears into subterranean channels, and further down in the lower reaches as Rio Ilo.

Stahleck Castle: Stahleck Castle (German: "Burg Stahleck" ) is a 12th-century fortified castle in the Upper Middle Rhine Valley at Bacharach in Rhineland-Palatinate, Germany.  It stands on a crag approximately 160 m above sea level on the left bank of the river at the mouth of the Steeg valley, approximately 50 km south of Koblenz, and offers a commanding view of the Lorelei valley.  Its name means "impregnable castle on a crag", from the Middle High German words "stahel" (steel) and "ecke" (here: crag).  It has a water-filled partial moat, a rarity in Germany.  Built on the orders of the Archbishop of Cologne, it was destroyed in the late 17th century but rebuilt in the 20th and is now a hostel.

Rhine: The Rhine (Latin: "Rhenus" , Romansh: "Rein" , German: "Rhein" , French: "le Rhin" , Dutch: "Rijn" ) is a European river that begins in the Swiss canton of Graubünden in the southeastern Swiss Alps, forms part of the Swiss-Liechtenstein, Swiss-Austrian, Swiss-German and then the Franco-German border, then flows through the Rhineland and eventually empties into the North Sea in the Netherlands.

Klopp Castle: Klopp Castle (German: Burg Klopp ) is a castle in the town of Bingen am Rhein in the Upper Middle Rhine Valley in Rhineland-Palatinate, Germany.  In the nineteenth century, the bergfried (similar to a keep) from the original medieval fortified castle was restored and a new building added which houses the town's administration.

Beaver Valley, Delaware and Pennsylvania: Beaver Valley (formerly known as Chandler’s Hollow) straddles the Pennsylvania and Delaware border in Delaware County, PA and New Castle County, DE.  An unincorporated place name, it is traversed by several streams which drain to Beaver Run which itself empties into the Brandywine River.  It is approximately bounded by US Route 202 to the east, The Brandywine River to the west, Thompsons Bridge Road to the south, and Smithbridge Road to the north, with Beaver Valley Road encircling a large portion of the valley.  The majority of the lands in Beaver Valley have been owned for decades by The Woodlawn Trustees, which designated in the early 1970s all of its Brandywine Hundred and Delaware County holdings in Beaver Valley and elsewhere as a Wildlife Refuge.  In 2012, The Woodlawn Trustees submitted development plans to Concord Township Supervisors in Delaware County for the purpose of constructing approximately 500 housing units and a 225,000 square foot national retail store, all of which would adjoin the First State National Historical Park in Chadds Ford Township, Delaware County, Pennsylvania and New Castle County, Delaware.  The original plans were withdrawn, but the developers – Frank McKee and the Julian brothers, Richard and Frank – came back with new plans entitled "Vineyard Commons" which called for 161 houses spread across approximately 230 acres.  Suing Concord Township in March of 2015 for its preliminary approval of Vineyard Commons, Beaver Valley Conservancy members argued that several dozen of Concord Township's own building and stormwater codes were violated by their approval.  In October, 2016, a Delaware County Common Pleas Court judge sent the case back to the Concord Supervisors ordering them to hold evidentiary hearings and to apply environmental protection standards to the development per Pennsylvania's Environmental Rights Amendment to its constitution.  Shortly after this court order, the developers agreed to sell their rights to the land to the Conservation Fund and the Mount Cuba Foundation, a deal which was finalized in May of 2017 with the help of the Brandywine Conservancy and the Beaver Valley Conservancy.  According to the Conservation Fund, the land will be donated to the National Park Service and added to the First State National Historical Park in Chadds Ford and New Castle County.

Stolzenfels Castle: Stolzenfels Castle (German: "Schloss Stolzenfels" ) is a former, medieval fortress castle ("Burg") turned into a palace, near Koblenz on the left bank of the Rhine, in the state of Rhineland-Palatinate, Germany.  Stolzenfels was a ruined 13th-century castle, gifted to the Prussian Crownprince, Frederick William in 1823.  He had it rebuilt as a 19th-century palace in Gothic Revival style.  Today, it is part of the UNESCO World Heritage Site Upper Middle Rhine Valley.

Dresden Elbe Valley: The Dresden Elbe Valley is a cultural landscape and former World Heritage Site stretching along the Elbe river in Dresden, the state capital of Saxony, Germany.  The valley, extending for some 20 km and passing through the Dresden Basin, is one of two major cultural landscapes built up over the centuries along the Central European river Elbe, along with the Dessau-Wörlitz Garden Realm downstream.

Reichenstein Castle (Trechtingshausen): Reichenstein Castle (German: "Burg Reichenstein" ), also known as "Falkenburg" is a castle in the UNESCO World Heritage Site of the Upper Middle Rhine Valley.  It stands on a mountain spur on the eastern slope of the Bingen Forest, above the Rhineland-Palatinate municipality of Trechtingshausen in the Mainz-Bingen district in Germany.

Supporting paragraphs: Sooneck Castle Rhine
Answer: North Sea