Question: Where does the Columbia River meet the ocean that contains the atoll which Kongo Loto Lafanga is an islet of?

full_context: Document 1: Niulakita: Niulakita is the southernmost island of Tuvalu, and also the name of the only village on this island. Niulakita has a population of 27 (2012 census). The residents of Niulakita have moved to the island from Niutao. Niulakita is represented in the Parliament of Tuvalu by the members of the constituency of Niutao.
Document 2: Northport Bridge: The Northport Bridge spans the Columbia River near Northport, Washington, close to the border with Canada. The steel cantilever through-truss bridge replaced an 1897 timber bridge, and was opened in 1951. It carries Washington State Route 25. It is one of a series of similar bridges built at about the same time, including the Grand Coulee Bridge and the Kettle Falls Bridges.
Document 3: Tokū, Tonga: Tokū is an uninhabited, volcanic island in Tonga. It is located in the very north of Vavaʻu group in the north of the country. It is about long and up to wide, yielding an area of . It is up to above sea level near its east coast.
Document 4: Motuloa (north of Nukufetau): Motuloa or Motulua is a very small island on the north of Nukufetau in Tuvalu. It is an oval with a length of 200 m, and lies between Teafuanonu (on the west) and Teafuaniua (on the east).
Document 5: Kotu Island: Kotu is an island in Lulunga district, in the Ha'apai islands of Tonga. As of 1992, there was one village on the island with a population of approximately 200 people.
Document 6: Tokinivae: Tokinivae is an islet of Nui atoll, in the Pacific Ocean state of Tuvalu.< Nui tradition is that Kolaka, a warrior from Nukufetau came on several raiding expeditions to Tokinivae, until he was killed and buried at Tararorae.
Document 7: Bridge of the Gods (land bridge): The Bridge of the Gods was a natural dam created by the Bonneville Slide, a major landslide that dammed the Columbia River near present-day Cascade Locks, Oregon in the Pacific Northwest of the United States. The river eventually breached the bridge and washed much of it away, but the event is remembered in local legends of the Native Americans as the "Bridge of the Gods".
Document 8: Tuvalu: An important creation myth of the islands of Tuvalu is the story of the te Pusi mo te Ali (the Eel and the Flounder) who created the islands of Tuvalu; te Ali (the flounder) is believed to be the origin of the flat atolls of Tuvalu and the te Pusin (the Eel) is the model for the coconut palms that are important in the lives of Tuvaluans. The stories as to the ancestors of the Tuvaluans vary from island to island. On Niutao, Funafuti and Vaitupu the founding ancestor is described as being from Samoa; whereas on Nanumea the founding ancestor is described as being from Tonga.
Document 9: Columbia Bar: The Columbia Bar, also frequently called the Columbia River Bar, is a system of bars and shoals at the mouth of the Columbia River spanning the U.S. states of Oregon and Washington. The bar is about 3 miles (5 km) wide and 6 miles (10 km) long.
Document 10: Fale, Tuvalu: Fale is an islet of Nukufetau, Tuvalu. The traditional history of Nukufetau recalls that in order to protect the atoll from raiders from Tonga, Lagitupu and Laupapa, two aliki (chiefs) protected Fale. Lagitupu and Laupapa created a trap at a place still called Tututekolo, which was beside a path which led to the beach, where they would surprise the raiders and spear them or split their skulls with an axe made from shells.
Document 11: Oregon: Oregon (/ ˈɔːrɪɡən / (listen)) is a state in the Pacific Northwest region on the West coast of the United States. The Columbia River delineates much of Oregon's northern boundary along Washington state, while the Snake River delineates much of its eastern boundary along Idaho. The parallel 42 ° north delineates the southern boundary with California and Nevada. Oregon is one of only three states of the contiguous United States to have a coastline on the Pacific Ocean.
Document 12: Kongo Loto Lafanga: Kongo Loto Lafanga is an islet of Nukufetau, Tuvalu, which is south of Lafanga islet in the North East of Nukufetau atoll.
Document 13: Columbia Gorge AVA: The Columbia Gorge AVA is an American Viticultural Area which includes land surrounding the Columbia River Gorge, straddling the border between Oregon and Washington. Due to the significant gradations of climate and geography found in the gorge, this AVA exhibits a wide range of terroir in a relatively small region; it is marketed as a "world of wine in 40 miles".
Document 14: Lafanga: Lafanga or Lafaga is an islet of Nukufetau, Tuvalu. The traditional history of Nukufetau recalls that in order to protect the atoll from raiders from Tonga, Fialua, an Aliki (chief), was given Lafanga, which is the largest of the eastern islets of Nukufetau. Fialua would attack raiders with his club and bury the bodies at a place called Temata.
Document 15: Motulalo: Motulalo is the largest islet of Nukufetau, Tuvalu. The traditional history of Nukufetau recalls that in order to protect the atoll from raiders from Tonga, Tauasa, an aliki (chief), was given Motulalo. Tauasa would pull up coconut trees and throw them at the raiders.
ground_truth: Columbia Bar
sub_queries: Kongo Loto Lafanga >> part of Answer: Nukufetau
Nukufetau >> located in or next to body of water Answer: Pacific Ocean
where does the columbia river meet Pacific Ocean Answer: Columbia Bar