Question: K-68 enters a city located on both banks of what river?

Context paragraphs:
Maritsa: The Maritsa, Meriç or Evros (Bulgarian: Марица , "Marica"; Ancient Greek: Ἕβρος , "Hébros"; Modern Greek: Έβρος Evros; Latin: "Hebrus" ; Romanized Thracian: "Evgos" or "Ebros"; Turkish: "Meriç" ) is, with a length of 480 km , the longest river that runs solely in the interior of the Balkans.  It has its origin in the Rila Mountains in Western Bulgaria, flowing southeast between the Balkan and Rhodope Mountains, past Plovdiv and Parvomay (where the Mechka and the Kayaliyka join it) to Edirne, Turkey.  East of Svilengrad, Bulgaria, the river flows eastwards, forming the border between Bulgaria (on the north bank) and Greece (on the south bank), and then between Turkey and Greece.  At Edirne, the river flows through Turkish territory on both banks, then turns towards the south and forms the border between Greece on the west bank and Turkey on the east bank to the Aegean Sea.  Turkey was given a small sector on the west bank opposite the city of Edirne.  The river enters the Aegean Sea near Enez, where it forms a delta.  The Tundzha is its chief tributary; the Arda is another one.  The lower course of the Maritsa/Evros forms part of the Bulgarian-Greek border and most of the Greek-Turkish border.  The upper Maritsa valley is a principal east-west route in Bulgaria.  The unnavigable river is used for power production and irrigation.

Killi River: Killi river, also called Killiyar, the main tributary of Karamana River, originates at Theerthankara near to Panavur in Nedumangad taluk of Thiruvananthapuram district.  The river enters Thiruvananthapuram city at Vazhayila and flows through Mannammoola, Maruthankuzhi, Edapazhinji, Jagathi,Killippalam, Attukal,Kalady South and merges with Karamana River at Pallathukadavu.  Attukal Temple is situated on the banks of this river.

Río Segundo, Córdoba: Rio Segundo, abbreviated as Río 2º, is a city located near the geographical center of Argentina, built on the banks of the river Rio Segundo about 40 km east-southeast of Córdoba and about 660 km west-northwest of Buenos Aires.  It is the largest city of the Río Segundo County(department).  Rio Segundo straddles National Route 9 and a main train line that runs from Córdoba to Buenos Aires.  Pilar is a smaller city in size that resides on the other side of the river.

Miosso River: The Miosso River is a river flowing south of the town of Moanda in Gabon.  It enters the Mberece River.  The Miosso River banks are swampy and admit a significant fish population.  The resulting Miosso Swamp isolates the Third Zone District and Rigobert Landji Public High School from the city.

Bridges in Uzhhorod: Uzhhorod, Ukraine, historically was situated on the right bank of the Uzh River, covers both banks of the river as it flows through the city.  Additionally, there is a small canal that re-enters the river as it enters the city.  Currently there are seven bridges spanning the river and a few more bridges across the canal.

Whitemouth River: The Whitemouth River is located in southeastern Manitoba, Canada.  The mouth of the river empties into the Winnipeg River system at the Whitemouth Falls Provincial Park.  The Whitemouth River begins in a remote forested area just north of the border between the United States and Canada.  Whitemouth Lake feeds the river year round, along with many wetlands throughout the Sandilands Provincial Forest area.  The river runs north and crosses the Trans-Canada Highway where it enters an area of farmlands.  There are many rapids along the river that make it a popular river to canoe on.  The river is only about an hour from the city of Winnipeg.  The towns of Seven Sisters, River Hills, Elma, Whitemouth, and Hadashville are located along the river.

Coos Bay, Oregon: Coos Bay (Coos language: Atsixiis) is a city located in Coos County, Oregon, United States, where the Coos River enters Coos Bay on the Pacific Ocean.  The city borders the city of North Bend, and together they are often referred to as one entity called either Coos Bay-North Bend or the Bay Area.  Coos Bay's population as of the 2010 census was 15,967 residents, making it the largest city on the Oregon Coast.

Ottawa, Kansas: Ottawa is a city in, and the county seat of, Franklin County, Kansas, United States.  It is located on both banks of the Marais des Cygnes River near the center of Franklin County.  As of the 2010 census, the city population was 12,649.

K-68 (Kansas highway): The K-68 is a state highway in Kansas beginning at Missouri Route 2 and passing through Louisburg where it intersects with U.S. Highway 69.  Four miles west of Louisburg, K-68 intersects with U.S. 169 and K-7, it also provides an end terminus with K-33 in Franklin County.  As K-68 enters Ottawa, it intersects with I-35/U.S. 59/U.S. 50 near the Walmart Distribution Center.  Near downtown Ottawa, it crosses the former route of US-59 before jogging to the southwest, crossing the Marais des Cygnes River then continuing to the west.

Wenatchee, Washington: Wenatchee ( ) is a city located in north-central Washington and is the largest city and county seat of Chelan County, Washington, United States.  The population within the city limits in 2010 was 31,925.  In 2014, the Office of Financial Management estimated the population at 33,070.  Located at the confluence of the Columbia and Wenatchee rivers near the eastern foothills of the Cascade Range, Wenatchee lies on the western side of the Columbia River, across from the city of East Wenatchee.  The Columbia River forms the boundary between Chelan and Douglas County.  Wenatchee is the principal city of the Wenatchee–East Wenatchee, Washington Metropolitan Statistical Area, which encompasses all of Chelan and Douglas counties (total population around 110,884).  However, the 'Wenatchee Valley Area' generally refers to the land between Rocky Reach and Rock Island Dam on both banks of the Columbia, which includes East Wenatchee, Rock Island, and Malaga.

Supporting paragraphs: K-68 (Kansas highway) Ottawa, Kansas
Answer: Marais des Cygnes River