Question: What county shares a border with the community of Dean, in the province where Dalhousie Mountain is found?

full_context: Document 1: Dean, Nova Scotia: Dean is a small farming & forestry community in the North Branch Musquodoboit in the Musquodoboit Valley along the Halifax Regional Municipality/Colchester County county line, in the Canadian province of Nova Scotia, along Route 336. Other communities in the North Branch include Elmsvale, Greenwood, Upper Musquodoboit, and Moose River Gold Mines, among others.
Document 2: Mount Gosford: Mount Gosford is a mountain located in southern Quebec, Canada, at the border with Maine. It lies entirely in Saint-Augustin-de-Woburn in Estrie and is part of the White Mountains of the Appalachians. It is named after Archibald Acheson, 2nd Earl of Gosford, governor general of British North America from 1835 to 1835. It is the 21st highest peak in Quebec and 4th in Southern Quebec.
Document 3: Pictou Island (Nova Scotia): Pictou Island is a Canadian island located in the Northumberland Strait approximately 4 NM north of Nova Scotia and 10 NM south of Prince Edward Island. Measuring 9.5 km in length and 2.5 km in width, the total area is 23.75 km. The island is administratively part of Pictou County. The island's highest elevation is 24 meters (78 feet) above sea level, and its current full-time residents population (as of 2016) stands at 28, with the seasonal population rising and lowering.
Document 4: Halifax County, Nova Scotia: Halifax County is a county in the Canadian province of Nova Scotia. The Municipality of the County of Halifax was the municipal government of Halifax County, apart from the separately incorporated towns and cities therein. The Municipality was dissolved in 1996, together with those town and city governments, in their amalgamation into Halifax Regional Municipality.
Document 5: Dalhousie Mountain: Dalhousie Mountain is a Canadian peak in the Cobequid Mountains and the highest elevation point in Pictou County, Nova Scotia.
Document 6: Franey Mountain: Franey Mountain is located in Victoria County, in the Canadian province of Nova Scotia, within Cape Breton Highlands National Park. Franey Mountain is part of the Cape Breton Highlands plateau and is located west of Ingonish, Cape Breton Island. The elevation of the mountain is . It is the highpoint of the massif between Dundas Brook and Clyburn Brook.
Document 7: Great Village: Great Village is a rural community of approximately 500 people located along Trunk 2 and the north shore of Cobequid Bay in Colchester County, Nova Scotia. It is considered locally to incorporate the areas of Highland Village to the west and Scrabble Hill to the north northwest.
Document 8: Pukeashun Mountain: Pukeashun Mountain is a peak in the Monashee Range in British Columbia, Canada. It is the highest point in the Adams Plateau, part of the Shuswap Highlands. The peak is the main feature of Pukeashun Provincial Park. Its name means "white rock" in the local Secwepemc language.
Document 9: Sherbrooke, Nova Scotia: Sherbrooke is a rural community on the Eastern Shore of Nova Scotia, Canada, in Guysborough County. It is located along the St. Mary's River, a major river in Nova Scotia. The community is named for Sir John Coape Sherbrooke, a colonial era Lieutenant Governor of Nova Scotia. Gold was discovered in the area in 1861 and Sherbrooke entered a gold rush in the which lasted two decades. The economy of the community today revolves around fishing, tourism and lumber. The community is the site of an open-air museum called "Sherbrooke Village" which depicts life in the later 1800s in the wake of the gold rush era.
Document 10: Mount Sir Wilfrid Laurier: Mount Sir Wilfrid Laurier is the highest peak of the Cariboo Mountains in the east-central interior of British Columbia, Canada. The mountain is part of the Premier Range, which is located just west of Valemount.
Document 11: Rural Municipality of Cornwallis: Cornwallis is a rural municipality located in the Canadian province of Manitoba. It surrounds the east, south and west sides of Brandon, Manitoba. Most of the land comprising the municipality is farmland, but it contains a few settlements. One of the larger settlements, Sprucewoods, sits at the north gate of Canadian Forces Base Shilo and contains a large group of the municipal population. In the past, there has been friction between the community and the farming base that make up much of Cornwallis.
Document 12: East Bay Hills (Nova Scotia): The East Bay Hills refer to a 'fault ridge' of ancient rock on the south side of the East Bay of the Bras d'Or Lake, located on Cape Breton Island, Canada, and are an extension of the Appalachian mountain chain. The East Bay Hills lie in Cape Breton County.
Document 13: Woodville, Nova Scotia: Woodville is a community in Kings County of about 200 people located in the Annapolis Valley of Nova Scotia. The community is situated north of Cambridge and Waterville at the foot of the North Mountain. Centred along Route 221, Woodville has a volunteer fire department, a Baptist church, two auto body shops, a home run automotive mechanic business, and many family-run farms. It is administratively part of the village of Cornwallis Square. A community centre is located in the former school, built in 1942. The former Wesley Knox United Church, built in 1921, was sold in 2006 is now a residence and artist's workshop.
Document 14: Upper Lakeville: Upper Lakeville is a small cottage community on the Eastern Shore of the Halifax Regional Municipality, in the Musquodoboit/Sheet Harbour region of the Marine Drive, in Nova Scotia. Upper Lakeville road is located on the junction of Trunk 7, 55.3 km from Dartmouth, and 58.9 km from Halifax.
Document 15: White Hill, Nova Scotia: White Hill is located in Pictou County in the province of Nova Scotia, Canada. It was once a rural farming community with a history of Scottish settlement. The population is around 300.
ground_truth: Colchester County
sub_queries: Which state is Dalhousie Mountain located? Answer: Nova Scotia
Dean, Nova Scotia >> shares border with Answer: Colchester County