Please answer the following question: Information:  - A federal republic is a federation of states with a republican form of government. At its core, the literal meaning of the word republic when used to reference a form of government means: "a country that is governed by elected representatives and by an elected leader (such as a president) rather than by a king or queen".  - Recreation is an activity of leisure, leisure being discretionary time. The "need to do something for recreation" is an essential element of human biology and psychology. Recreational activities are often done for enjoyment, amusement, or pleasure and are considered to be "fun".  - Georgian Bay (French: "Baie Georgienne") is a large bay of Lake Huron, located entirely within Ontario, Canada. The main body of the bay lies east of the Bruce Peninsula and Manitoulin Island. To its northwest is the North Channel.  - Lake Michigan is one of the five Great Lakes of North America and the only one located entirely within the United States. The other four Great Lakes are shared by the U.S. and Canada. It is the second-largest of the Great Lakes by volume and the third-largest by surface area, after Lake Superior and Lake Huron (and is slightly smaller than the U.S. state of West Virginia). To the east, its basin is conjoined with that of Lake Huron through the wide Straits of Mackinac, giving it the same surface elevation as its easterly counterpart; the two are technically a single lake. Lake Michigan is shared, from west to east, by the U.S. states of Wisconsin, Illinois, Indiana, and Michigan. Ports along its shores include, Chicago, Milwaukee, Green Bay, Wisconsin, Gary, Indiana, and Benton Harbor, Michigan. The word "Michigan" originally referred to the lake itself, and is believed to come from the Ojibwa word "mishigami" meaning "great water". In the earliest European maps of the region, the name of Lake Illinois has been found in addition to that of "Michigan".  - North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere. It can also be considered a northern subcontinent of the Americas. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the west and south by the Pacific Ocean, and to the southeast by South America and the Caribbean Sea.  - Sovereignty is understood in jurisprudence as the full right and power of a governing body to govern itself without any interference from outside sources or bodies. In political theory, sovereignty is a substantive term designating supreme authority over some polity. It is a basic principle underlying the dominant Westphalian model of state foundation.  - A U.S. National Marine Sanctuary is a federally designated area within United States waters that protects areas of the marine environment with special conservation, recreational, ecological, historical, cultural, archeological, scientific, educational, or aesthetic qualities. The National Marine Sanctuary System consists of 14 marine protected areas that encompass more than . Individual areas range from less than   - Thunder Bay National Marine Sanctuary and Underwater Preserve is a United States National Marine Sanctuary on Lake Huron , within the northeastern region of the U.S. state of Michigan . It protects an estimated 116 historically significant shipwrecks ranging from nineteenth century wooden side - wheelers to twentieth century steel - hulled steamers . There are a great many wrecks in the sanctuary , and their preservation and protection is a concern for national policy makers . The landward boundary of the sanctuary extends from the western boundary of Presque Isle County to the southern boundary of Alcona County . The sanctuary extends east from the lakeshore to the international border . Alpena is the largest city in the area .  - The Huronian glaciation (or Makganyene glaciation) was a glaciation that extended from 2.4 billion years ago (Ga) to 2.1 Ga, during the Siderian and Rhyacian periods of the Paleoproterozoic era. The Huronian glaciation followed after the Great Oxygenation Event (GOE), a time when increased atmospheric oxygen decreased atmospheric methane. The oxygen combined with the methane to form carbon dioxide and water, which does not retain heat as well as methane does.  - The Mississippi River is the chief river of the largest drainage system on the North American continent. Flowing entirely in the United States (although its drainage basin reaches into Canada), it rises in northern Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains all or parts of 31 U.S. states and 2 Canadian provinces between the Rocky and Appalachian Mountains. The Mississippi ranks as the fourth longest and fifteenth largest river in the world by discharge. The river either borders or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.  - A U.S. state is a constituent political entity of the United States of America. There are 50 states, which are bound together in a union with each other. Each state holds administrative jurisdiction over a defined geographic territory, and shares its sovereignty with the United States federal government. Due to the shared sovereignty between each state and the federal government, Americans are citizens of both the federal republic and of the state in which they reside. State citizenship and residency are flexible, and no government approval is required to move between states, except for persons covered by certain types of court orders (e.g., paroled convicts and children of divorced spouses who are sharing custody).  - The Great Lakes (also called the Laurentian Great Lakes, or the Great Lakes of North America) are a series of interconnected freshwater lakes located primarily in the upper mid-east region of North America, on the CanadaUnited States border, which connect to the Atlantic Ocean through the Saint Lawrence River. Consisting of Lakes Superior, Michigan, Huron (or MichiganHuron), Erie, and Ontario, they form the largest group of freshwater lakes on Earth, containing 21% of the world's surface fresh water by volume. The total surface is , and the total volume (measured at the low water datum) is . Due to their sea-like characteristics (rolling waves, sustained winds, strong currents, great depths, and distant horizons) the five Great Lakes have also long been referred to as "inland seas". Lake Superior is the second largest lake in the world by area, and Lake Michigan is the largest lake that is entirely within one country. The southern half of the Great Lakes is bordered by the Great Lakes Megalopolis.  - Detroit is the most populous city in the U.S. state of Michigan, the fourth-largest city in the Midwest and the largest city on the United StatesCanada border. It is the seat of Wayne County, the most populous county in the state.  - Ontario, one of the 13 provinces and territories of Canada, is located in east-central Canada. It is Canada's most populous province by a large margin, accounting for nearly 40 percent of all Canadians, and is the second-largest province in total area. Ontario is fourth-largest in total area when the territories of the Northwest Territories and Nunavut are included. It is home to the nation's capital city, Ottawa, and the nation's most populous city, Toronto.  - The Straits of Mackinac is a narrow waterway in the U.S. state of Michigan, between Michigan's Lower and Upper Peninsulas. The Straits of Mackinac connect two of the Great Lakes, Lake Michigan and Lake Huron. The straits are wide and deep. Hydrologically, the two connected lakes can be considered one, which is called Lake MichiganHuron. Historically, the region around the Straits was known by the native Odawa people as Michilimackinac.  - Lake MichiganHuron (also HuronMichigan) is the combined waters of Lake Michigan and Lake Huron, which are joined through the wide, 20-fathom (120 ft; 37 m) deep, open-water Straits of Mackinac. Huron and Michigan are technically a single lake because the flow of water through the straits keeps their water levels in near-equilibrium. (Although the flow is generally eastward, the water moves in either direction depending on local conditions.) Combined, Lake MichiganHuron is the largest fresh water lake by area in the world. If Lake Huron and Lake Michigan are considered two separate lakes, Lake Superior is larger than either.  - Lake Huron is one of the five Great Lakes of North America. Hydrologically, it comprises the easterly portion of Lake MichiganHuron, having the same surface elevation as its westerly counterpart, to which it is connected by the , Straits of Mackinac. It is shared on the east by the Canadian province of Ontario and on the west by the state of Michigan in the United States. The name of the lake is derived from early French explorers who named it for the Huron people inhabiting the region. The Huronian glaciation was named due to evidence collected from Lake Huron region. The northern parts of the lake include the North Channel and Georgian Bay. The main inlet is the St. Marys River and the main outlet is the St. Clair.  - Michigan is a state in the Great Lakes and Midwestern regions of the United States. The name Michigan is the French form of the Ojibwa word "mishigamaa", meaning "large water" or "large lake". Michigan is the tenth most populous of the 50 United States, with the 11th most extensive total area (the largest state by total area east of the Mississippi River). Its capital is Lansing, and its largest city is Detroit.  - Americans are citizens of the United States of America. The country is home to people of many different national origins. As a result, Americans do not equate their nationality with ethnicity, but with citizenship and allegiance. Although citizens make up the majority of Americans, non-citizen residents, dual citizens, and expatriates may also claim an American identity.  - Marine protected areas (MPA) are protected areas of seas, oceans, estuaries or large lakes. MPAs restrict human activity for a conservation purpose, typically to protect natural or cultural resources. Such marine resources are protected by local, state, territorial, native, regional, national, or international authorities and differ substantially among and between nations. This variation includes different limitations on development, fishing practices, fishing seasons and catch limits, moorings and bans on removing or disrupting marine life. In some situations (such as with the Phoenix Islands Protected Area), MPAs also provide revenue for countries, potentially equal to the income that they would have if they were to grant companies permissions to fish.    After reading the paragraphs above, we are interested in knowing the entity with which 'thunder bay national marine sanctuary' exhibits the relationship of 'instance of'. Find the answer from the choices below.  Choices: - 1  - addition  - area  - bay  - biology  - border  - canadians  - capital  - channel  - city  - conservation  - continent  - country  - county  - court  - elevation  - environment  - event  - evidence  - federal government  - five  - form of government  - foundation  - four  - fresh water  - governing body  - government  - gulf  - human  - identity  - interference  - jurisdiction  - jurisprudence  - lake  - leisure  - may  - model  - name  - ocean  - people  - phoenix  - principle  - protected area  - province  - recreation  - republic  - river  - saint  - sanctuary  - sea  - seat  - series  - sharing  - state  - subcontinent  - system  - term  - territory  - theory  - variation  - waterway
A:
protected area