Question: In which county is the home of the National Historic Site honoring the president during the purchase of the state bordered to the north by the Arctic Ocean?

full_context: Document 1: Greeneville, Tennessee: Greeneville is a town in, and the county seat of Greene County, Tennessee, United States. The population as of the 2010 census was 15,062. The town was named in honor of Revolutionary War hero Nathanael Greene. It is the only town with this spelling in the United States, although there are numerous U.S. towns named "Greenville". The town was the capital of the short-lived State of Franklin in the 18th-century history of the Tennessee region.
Document 2: Alaska Purchase: Russia continued to see an opportunity to weaken British power by causing British Columbia, including the Royal Navy base at Esquimalt, to be surrounded or annexed by American territory. Following the Union victory in the civil war, the Tsar instructed the Russian minister to the United States, Eduard de Stoeckl, to re-enter into negotiations with William Seward in the beginning of March 1867. President Johnson was entangled in negotiations about Reconstruction and Seward had alienated a number of Republicans, so they believed that the purchase would help divert attention from the current domestic matters. The negotiations concluded after an all - night session with the signing of the treaty at 04: 00 on March 30, 1867, with the purchase price set at $7.2 million ($123 million today), or about 2 cents per acre ($4.74 / km).
Document 3: Tennessee: In 1864, Andrew Johnson (a War Democrat from Tennessee) was elected Vice President under Abraham Lincoln. He became President after Lincoln's assassination in 1865. Under Johnson's lenient re-admission policy, Tennessee was the first of the seceding states to have its elected members readmitted to the U.S. Congress, on July 24, 1866. Because Tennessee had ratified the Fourteenth Amendment, it was the only one of the formerly secessionist states that did not have a military governor during the Reconstruction period.
Document 4: Alaska Purchase: The Alaska Purchase (Russian: Продажа Аляски, tr. Prodazha Alyaski) was the United States' acquisition of Alaska from the Russian Empire on March 30, 1867, by a treaty ratified by the United States Senate, and signed by president Andrew Johnson.
Document 5: Alaska Purchase: Russia continued to see an opportunity to weaken British power by causing British Columbia, including the Royal Navy base at Esquimalt, to be surrounded or annexed by American territory. Following the Union victory in the Civil War, the Tsar instructed the Russian minister to the United States, Eduard de Stoeckl, to re-enter into negotiations with William H. Seward in the beginning of March 1867. President Johnson was entangled in negotiations about Reconstruction and Seward had alienated a number of Republicans, so they believed that the purchase would help divert attention from the domestic issues. The negotiations concluded after an all - night session with the signing of the treaty at 04: 00 on March 30, 1867, with the purchase price set at $7.2 million ($105 million in 2016), or about 2 cents per acre ($4.74 / km).
Document 6: Andrew Johnson National Historic Site: The cemetery also includes the interments of Johnson's wife, Eliza McCardle Johnson, and son Brigadier General Robert Johnson Henderson. David T. Patterson, a United States Senator from Tennessee, and his son Andrew J. Patterson, who was instrumental in securing historic designation for the Greeneville properties associated with Andrew Johnson, were among others buried in the cemetery. The site was authorized by Congress as a U.S. National Monument in 1935, established on April 27, 1942, and redesignated a National Historic Site on December 11, 1963.
Document 7: Tennessee: The modern spelling, Tennessee, is attributed to James Glen, the governor of South Carolina, who used this spelling in his official correspondence during the 1750s. The spelling was popularized by the publication of Henry Timberlake's "Draught of the Cherokee Country" in 1765. In 1788, North Carolina created "Tennessee County", the third county to be established in what is now Middle Tennessee. (Tennessee County was the predecessor to current-day Montgomery County and Robertson County.) When a constitutional convention met in 1796 to organize a new state out of the Southwest Territory, it adopted "Tennessee" as the name of the state.
Document 8: Arctic Ocean: In Alaska, the main ports are Barrow (71 ° 17 ′ 44 ''N 156 ° 45 ′ 59'' W ﻿ / ﻿ 71.29556 ° N 156.76639 ° W ﻿ / 71.29556; - 156.76639 ﻿ (Barrow)) and Prudhoe Bay (70 ° 19 ′ 32 ''N 148 ° 42 ′ 41'' W ﻿ / ﻿ 70.32556 ° N 148.71139 ° W ﻿ / 70.32556; - 148.71139 ﻿ (Prudhoe)).
Document 9: Nashville, Tennessee: The town of Nashville was founded by James Robertson, John Donelson, and a party of Overmountain Men in 1779, near the original Cumberland settlement of Fort Nashborough. It was named for Francis Nash, the American Revolutionary War hero. Nashville quickly grew because of its strategic location, accessibility as a port on the Cumberland River, a tributary of the Ohio River; and its later status as a major railroad center. By 1800, the city had 345 residents, including 136 African American slaves and 14 free blacks. In 1806, Nashville was incorporated as a city and became the county seat of Davidson County, Tennessee. In 1843, the city was named the permanent capital of the state of Tennessee.
Document 10: Jonesborough, Tennessee: Jonesborough (historically also Jonesboro) is a town in, and the county seat of, Washington County, Tennessee, in the southeastern United States. The population was 5,975 at the 2010 census. It is "Tennessee's oldest town".
Document 11: Geography of Alaska: The state is bordered by Yukon and British Columbia, Canada to the east, the Gulf of Alaska and the Pacific Ocean to the south, Russia (Chukotka Autonomous Okrug), Bering Sea, the Bering Strait, and Chukchi Sea to the west, and the Beaufort Sea and the Arctic Ocean to the north.
Document 12: Arctic: The Arctic (/ ˈɑːrktɪk / or / ˈɑːrtɪk /) is a polar region located at the northernmost part of Earth. The Arctic consists of the Arctic Ocean, adjacent seas, and parts of Alaska (United States), Northern Canada, Finland, Greenland (Denmark), Iceland, Norway, Russia and Sweden. Land within the Arctic region has seasonally varying snow and ice cover, with predominantly treeless permafrost - containing tundra. Arctic seas contain seasonal sea ice in many places.
Document 13: Alaska: Alaska (i/əˈlæskə/) is a U.S. state situated in the northwest extremity of the Americas. The Canadian administrative divisions of British Columbia and Yukon border the state to the east while Russia has a maritime border with the state to the west across the Bering Strait. To the north are the Chukchi and Beaufort Seas, the southern parts of the Arctic Ocean. To the south and southwest is the Pacific Ocean. Alaska is the largest state in the United States by area, the 3rd least populous and the least densely populated of the 50 United States. Approximately half of Alaska's residents (the total estimated at 738,432 by the Census Bureau in 2015) live within the Anchorage metropolitan area. Alaska's economy is dominated by the fishing, natural gas, and oil industries, resources which it has in abundance. Military bases and tourism are also a significant part of the economy.
Document 14: Andrew Johnson National Cemetery: The Andrew Johnson National Cemetery is a United States National Cemetery on the grounds of the Andrew Johnson National Historic Site in Greeneville, Tennessee. Established in 1906, the cemetery was built around the resting place of Andrew Johnson, the 17th President of the United States, and holds more than two thousand graves.
Document 15: Alaska Purchase: The Alaska Purchase (Russian: Продажа Аляски, tr. Prodazha Alyaski) was the United States' acquisition of Alaska from the Russian Empire on March 30, 1867, by a treaty ratified by the United States Senate, and signed by President Andrew Johnson.
ground_truth: Greene County
sub_queries: which state is bordered to the north by the artic ocean Answer: Alaska
who was the president when Alaska was purchased Answer: Andrew Johnson
Andrew Johnson National Historic Site >> located in the administrative territorial entity Answer: Greeneville
Greeneville >> located in the administrative territorial entity Answer: Greene County