Question: When did the islands which include Governors Island become a Canadian province?

full_context: Document 1: Gouvernøren Harbor: Gouvernøren Harbor () is a small harbor indenting the east side of Enterprise Island just west of Pythia Island in Wilhelmina Bay, off the west coast of Graham Land, Antarctica. The name was applied by whalers using the harbor because the whaling vessel "Gouvernøren I" was wrecked there in 1916.
Document 2: 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 3: Bermuda: Despite the small land mass, place names are repeated; there are, for example, two islands named Long Island, three bays named Long Bay (on Somerset, Main, and Cooper's islands), two Horseshoe Bays (one in Southampton, on the Main Island, the other at Morgan's Point, formerly Tucker's Island), there are two roads through cuttings called Khyber Pass (one in Warwick, the other in St. George's Parish), and St George's Town is located on St George's Island within St George's Parish (each known as St George's). There is a Hamilton Parish in addition to the City of Hamilton (which is in Pembroke Parish).
Document 4: Ottawa Islands: The Ottawa Islands (Inuit: "Arviliit") are a group of uninhabited islands situated in the eastern edge of Canada's Hudson Bay. The group comprises 24 small islands, located at approximately 60N 80W. The main islands include Booth Island, Bronson Island, Eddy Island, Gilmour Island, J. Gordon Island, Pattee Island, and Perley Island. The highest point is on Gilmour Island, which rises to over . Located a short distance off the northwest coast of Quebec's Ungava Peninsula, they, like the other coastal islands in Hudson Bay, were historically part of the Northwest Territories, and became part of the territory of Nunavut upon its creation in 1999.
Document 5: Shallow Bay (Newfoundland and Labrador): Shallow Bay is a natural bay near Pistolet Bay, Great Northern Peninsula, off the island of Newfoundland in the province of Newfoundland and Labrador, Canada.
Document 6: Prince Edward Island: Prince Edward Island Île - du - Prince - Édouard (French) Epekwitk (Mi'kmaq) Flag Coat of arms Motto (s): Latin: Parva sub ingenti (The small protected by the great) BC AB SK MB ON QC NB PE NS NL YT NT NU Confederation July 1, 1873 (8th) Capital Charlottetown Largest city Charlottetown Largest metro Charlottetown Government Lieutenant Governor Antoinette Perry Premier Wade MacLauchlan (Liberal) Legislature Legislative Assembly of Prince Edward Island Federal representation (in Canadian Parliament) House seats 4 of 338 (1.2%) Senate seats 4 of 105 (3.8%) Area Total 5,660 km (2,190 sq mi) Land 5,660 km (2,190 sq mi) Water 0 km (0 sq mi) 0% Area rank Ranked 13th 0.1% of Canada Population (2016) Total 142,907 Estimate (2018 Q1) 152,768 Rank Ranked 10th Density 25.25 / km (65.4 / sq mi) Demonym (s) Prince Edward Islander, Islander Official languages English (de facto) GDP Rank 10th Total (2011) C $5.353 billion Per capita C $36,740 (13th) Time zone Atlantic: UTC - 4 Postal abbr. PE Postal code prefix ISO 3166 code CA - PE Flower Pink lady's slipper Tree Red oak Bird Blue jay Website www.princeedwardisland.ca Rankings include all provinces and territories
Document 7: Governors Island (Prince Edward Island): Governors Island is a Canadian island located in Hillsborough Bay, a sub-basin of the Northumberland Strait along the south shore of Prince Edward Island.
Document 8: Portland Island (British Columbia): Portland Island is an island in the Southern Gulf Islands of the South Coast of British Columbia, Canada. It is located west of Moresby Island and off the south tip of Saltspring Island, adjacent to the main BC Ferries route just offshore from the terminal at Swartz Bay at the tip of the Saanich Peninsula. Portland Island was given to Princess Margaret in 1958 to commemorate her visit to the province. Princess Margaret returned the island to British Columbia in 1967, after which point it became a provincial park. Today, Portland Island is a part of Gulf Islands National Park Reserve (GINPR).
Document 9: Prince Edward Island: Prince Edward Island (PEI or P.E.I.; French: Île - du - Prince - Édouard) is a province of Canada consisting of the island of the same name, and several much smaller islands. Prince Edward Island is one of the three Maritime Provinces and is the smallest province in both land area and population. It is part of the traditional lands of the Mi'kmaq, and became a British colony in the 1700s and was federated into Canada as a province in 1873. Its capital is Charlottetown. According to the 2016 census, the province of Prince Edward Island has 142,907 residents.
Document 10: Lennox Island (Prince Edward Island): Lennox Island is an island located in Malpeque Bay off the northwest coast of Prince Edward Island, Canada. Connected by a short causeway and bridge, Lennox Island is home to the Lennox Island First Nation, of the Mi'kmaq people. The Mi'kmaq name for the island was "L'nui Minegoo", and it has been informally known by European settlers as "Indian Island".
Document 11: Albert Edward Bay: Albert Edward Bay is a bay on the southeast side of Victoria Island in the Canadian Arctic Archipelago. If faces Victoria Strait to the east. There are several islands in the bay, the largest of which is Admiralty Island at its mouth. Its north side is the Collinson Peninsula.
Document 12: Charlottetown (electoral district): Charlottetown (formerly Hillsborough) is a federal electoral district in Prince Edward Island, Canada, that has been represented in the House of Commons of Canada since 2004. The district, which includes the entire City of Charlottetown, has an area of 46 km and a population of 34,562 as of 2011.
Document 13: 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 14: Geography of Prince Edward Island: Prince Edward Island's geography is mostly pastoral with red soil, white sand, and scattered communities. Known as the "Garden of the Gulf", the island is located in the Gulf of Saint Lawrence north of Nova Scotia and east of New Brunswick, with which it forms the Northumberland Strait.
Document 15: Province House (Prince Edward Island): Province House is where the Prince Edward Island Legislature, known as the Legislative Assembly of Prince Edward Island, has met since 1847. The building is located at the intersection of Richmond and Great George Streets in Charlottetown; it is Canada's second-oldest seat of government.
ground_truth: 1873
sub_queries: Governors Island >> located in the administrative territorial entity Answer: Prince Edward Island
when did Prince Edward Island become a province Answer: 1873