Context: Columbia Lake is the primary lake at the headwaters of the Columbia River, in British Columbia, Canada. It is fed by several small tributaries. The village of Canal Flats is located at the south end of the lake., A tributary or affluent is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage basin of its surface water and groundwater, leading the water out into an ocean., The Columbia River is the largest river in the Pacific Northwest region of North America. The river rises in the Rocky Mountains of British Columbia, Canada. It flows northwest and then south into the US state of Washington, then turns west to form most of the border between Washington and the state of Oregon before emptying into the Pacific Ocean. The river is long, and its largest tributary is the Snake River. Its drainage basin is roughly the size of France and extends into seven US states and a Canadian province., A highway is any public road or other public way on land. It is used for major roads, but also includes other public roads and public tracks: It is "not" an equivalent term to controlled-access highway, or a translation for "autobahn", "autoroute", etc., The Snake River is a major river of the greater Pacific Northwest in the United States. At long, it is the largest tributary of the Columbia River, the largest North American river that empties into the Pacific Ocean. Rising in western Wyoming, the river flows through the Snake River Plain of southern Idaho, then through the rugged Hells Canyon area via northeastern Oregon and the rolling Palouse Hills, to reach its mouth near the Washington Tri-Cities area, where it enters the Columbia. Its drainage basin encompasses parts of six U.S. states, and its average discharge is over ., British Columbia (BC) is the westernmost province of Canada, with a population of more than four million people located between the Pacific Ocean and the Rocky Mountains. 
British Columbia is also a component of the Pacific Northwest and the Cascadia bioregion, along with the U.S. states of Idaho, Oregon, Washington and Alaska., The Columbia Valley is the name used for a region in the Rocky Mountain Trench near the headwaters of the Columbia River between the town of Golden and the Canal Flats. The main hub of the valley is the town of Invermere. Other towns include Radium Hot Springs, Windermere and Fairmont Hot Springs. The Panorama Ski Resort is located near the valley., The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south and is bounded by Asia and Australia in the west and the Americas in the east., The maple leaf is the characteristic leaf of the maple tree, and is the most widely recognized national symbol of Canada., The Columbia Country is a term used in the Canadian province of British Columbia to refer to the upper basin of the Columbia River in that province. It includes a smaller region known as the Columbia Valley, near the river's headwaters at Columbia Lake in the Rocky Mountain Trench, and the Big Bend of that river, now mostly inundated by Kinbasket Lake and Revelstoke Lake. The area has no precisely defined boundaries but conventionally refers to the region upstream from Revelstoke, as the Arrow Lakes are generally referred to as a region in their own right, or as part of the West Kootenay. The lower Columbia, around the cities of Castlegar and Trail is considered part of the West Kootenay, not the Columbia Country., The Rocky Mountains, commonly known as the Rockies, are a major mountain range in western North America. The Rocky Mountains stretch more than from the northernmost part of British Columbia, in western Canada, to New Mexico, in the southwestern United States. Within the North American Cordillera, the Rockies are somewhat distinct from the Pacific Coast Ranges and the Cascade Range and Sierra Nevada which all lie further to the west., The Trans-Canada Highway (French: "Route Transcanadienne") is a transcontinental federal-provincial highway system that travels through all ten provinces of Canada between its Pacific Ocean and Atlantic Ocean coasts to the west and east respectively. It is, along with the Trans-Siberian Highway and Australia's Highway 1, one of the world's longest national highways, with the main route spanning . The system was approved by the Trans-Canada Highway Act of 1949, with construction commencing in 1950. The highway officially opened in 1962, and was completed in 1971. Upon its original completion, the Trans-Canada Highway was the most lengthy uninterrupted highway in the world. The highway system is recognizable by its distinctive white-on-green maple leaf route markers., Kinbasket Lake (or Kinbasket Reservoir) is a reservoir on the Columbia River in southeast British Columbia, north of the city of Revelstoke and the town of Golden. The reservoir was created by the construction of the Mica Dam. The lake includes two reaches, Columbia Reach (to the south) and Canoe Reach (to the north), referring to the river valleys flooded by the dam. To the north it almost reaches the town of Valemount in an impoundment of the Canoe River. To the south it reaches upstream the Columbia River towards the city of Golden., Highway 23 is a north - south highway that straddles the Trans - Canada Highway in the province 's Columbia Country region . Its section north of Revelstoke is known as the Big Bend Highway and was part of the original routing of Highway 1 along the Columbia River . The Big Bend area was well known as there was a gold rush there , beginning in 1864 . Travellers used canoes or river steamers until a dirt - surfaced `` highway '' was built on the east bank around the Big Bend , from Revelstoke to Golden , from 1930 to 1937 , opening officially in 1940 , and it served as the trans - provincial highway until 1962 when the Rogers Pass route was opened . Highway 23 was initially opened in 1964 , and it was re-aligned through the latter half of the 1960s . Realignment of the highway also occurred in the early 1980s , in anticipation of the creation of the reservoir for the Revelstoke Dam ( Revelstoke Lake ) , which flooded lower parts of the highway ., Canada (French: ) is a country in the northern half of North America. Its ten provinces and three territories extend from the Atlantic to the Pacific and northward into the Arctic Ocean, covering , making it the world's second-largest country by total area and the fourth-largest country by land area. Canada's border with the United States is the world's longest land border. The majority of the country has a cold or severely cold winter climate, but southerly areas are warm in summer. Canada is sparsely populated, the majority of its land territory being dominated by forest and tundra and the Rocky Mountains. About four-fifths of the country's population of 36 million people is urbanized and live near the southern border. Its capital is Ottawa, its largest city is Toronto; other major urban areas include Montreal, Vancouver, Calgary, Edmonton, Quebec City, Winnipeg and Hamilton., The Pacific Northwest (in the United States, commonly abbreviated as PNW), sometimes referred to as Cascadia, is a geographic region in western North America bounded by the Pacific Ocean to the west and loosely, by the Rocky Mountains on the east. Though no agreed boundary exists, a common conception includes the U.S. states of Oregon and Washington and the Canadian province of British Columbia. Broader conceptions reach north into Alaska and Yukon, south into far northern California and east to the Continental Divide, thus including Idaho, Western Montana, and western Wyoming. Narrower conceptions may be limited to the northwestern US or to the coastal areas west of the Cascade and Coast mountains. The variety of definitions can be attributed to partially overlapping commonalities of the region's history, geography, society, and other factors., A drainage basin or catchment basin is an extent or an area of land where all surface water from rain, melting snow, or ice converges to a single point at a lower elevation, usually the exit of the basin, where the waters join another body of water, such as a river, lake, reservoir, estuary, wetland, sea, or ocean. Thus if a tributary stream joins a brook that in turn joins a small river which is a tributary of a larger river, there is a series of successively larger (and lower elevation) drainage basins. For instance, the Missouri and Ohio rivers are within their own drainage basins and also within the drainage basin of the Mississippi River., The Atlantic Ocean is the second largest of the world's oceans with a total area of about . It covers approximately 20 percent of the Earth's surface and about 29 percent of its water surface area. It separates the "Old World" from the "New World"., The Rocky Mountain Trench, also known as The Valley of a Thousand Peaks or simply the Trench, is a large valley in the northern part of the Rocky Mountains. It is both visually and cartographically a striking physiographic feature extending approximately from Flathead Lake, Montana to the Liard River, just south of the British Columbia-Yukon border near Watson Lake, Yukon. The trench bottom is 3-16 km (210 miles) wide and ranges from 600-900 metres (2,0003,000 feet) above sea level. The general orientation of the Trench is an almost uniform 150/330 degree geographic north vector and has become convenient for north/south aviators., The Trans-Siberian Highway is the unofficial name for a network of federal highways that span the width of Russia from the Baltic Sea of the Atlantic Ocean to the Sea of Japan of the Pacific Ocean. In the Asian Highway Network, the route is known as AH6. It stretches over from St. Petersburg to Vladivostok. The road disputes the title of the longest national highway in the world with the Australia's Highway 1., Subject: british columbia highway 23, Relation: instance_of, Options: (A) 1 (B) area (C) body of water (D) border (E) canyon (F) capital (G) city (H) climate (I) coast (J) component (K) conception (L) construction (M) country (N) dam (O) definition (P) degree (Q) drainage basin (R) estuary (S) geographic region (T) highway (U) lake (V) leaf (W) main stem (X) may (Y) mountain (Z) mountain range ([) name (\) network (]) ocean (^) pacific coast ranges (_) point (`) population (a) province (b) province of canada (c) public (d) range (e) region (f) reservoir (g) resort (h) river (i) road (j) single (k) ski resort (l) snow (m) stream (n) surface (o) ten (p) term (q) three (r) town (s) tree (t) tributary (u) valley (v) variety (w) village (x) wetland
Output: road