Question: Where is Sherri Mitchell's tribe organized as a First Nations band government?

full_context: Document 1: Citizen Potawatomi Nation: Citizen Potawatomi Nation is a federally recognized tribe of Potawatomi people located in Oklahoma. The Potawatomi are traditionally an Algonquian-speaking Eastern Woodlands tribe. They have 29,155 enrolled tribal members, of whom 10,312 live in the state of Oklahoma.
Document 2: Patricia E. Ryan: Patricia E. "Pat" Ryan is a human rights and women's rights advocate. She served as executive director of the Maine Human Rights Commission, a state agency tasked with enforcement of Maine's anti-discrimination laws, for over three decades. Prior to that, she chaired the Maine Commission for Women and the Maine State Personnel Board. She was a co-founder of the Maine Women's Lobby. She was inducted into the Maine Women's Hall of Fame in 2014.
Document 3: Penobscot Bay: Penobscot Bay is an inlet of the Gulf of Maine and Atlantic Ocean in south central Maine. The bay originates from the mouth of Maine's Penobscot River, downriver from Belfast. Penobscot Bay has many working waterfronts including Rockland, Rockport, and Stonington, and Belfast upriver. Penobscot Bay is between Muscongus Bay and Blue Hill Bay, just west of Acadia National Park.
Document 4: Passaconaway: Passaconaway, which translates to "Child of the Bear", was sachem of the Pennacook people in what is now northern New England in the United States.
Document 5: Bernadette McSherry: Bernadette McSherry is a professor of law, specialising in mental health law and criminal law, at the University of Melbourne. She is currently the Foundation Director of the Melbourne Social Equity Institute and an Adjunct Professor of law at Monash University and the Melbourne Law School. She is also a Fellow of the Academy of Social Sciences in Australia, Fellow of the Australian Academy of Law and President of the Transnational Committee of the Australian and New Zealand Association of Psychiatry, Psychology and Law.
Document 6: Maliseet: The Wolastoqiyik, or Maliseet ( , also spelled Malecite), are an Algonquian-speaking First Nation of the Wabanaki Confederacy.
Document 7: Sherri Mitchell: Sherri Mitchell is a Penobscot attorney and activist from Maine. Mitchell is an attorney with the Native American Unit of Pine Tree Legal Assistance. She is also the executive director of the Land Peace Foundation, which is dedicated to the protection of indigenous land rights. Mitchell has been actively involved with the Idle No More movement for indigenous rights in Canada and abroad.
Document 8: Native Americans in the United States: In the United States of America, Native Americans (also known as American Indians, Indigenous Americans or simply Indians; see §Terminology differences) are people who belong to one of the over 500 distinct Native American tribes that survive intact today as partially sovereign nations within the country's modern boundaries. These tribes and bands are descended from the pre-Columbian indigenous population of North America.
Document 9: Dana Berliner: Dana Berliner is Litigation Director at the Institute for Justice, a public interest law firm in Arlington, Virginia founded in 1991 by Chip Mellor and Clint Bolick. She was co-lead counsel for Susette Kelo in the landmark United States Supreme Court case "Kelo v. City of New London".
Document 10: North Slave Métis Alliance: The North Slave Métis Alliance is a non-profit society that represents the Aboriginal rights-bearing Métis people of the Northwest Territories, who primarily exercise their Aboriginal rights north and east of Great Slave Lake. The NSMA’s mandate includes: The assertion, protection, and implementation of the Aboriginal rights of the North Slave Métis People; and the exercise of Métis responsibility to protect the environment and to promote and enhance Métis education, economic, social, and cultural development. The NSMA is vitally concerned with the protection, preservation, and sustainable use of its traditional lands and resources. With that in mind, the NSMA is committed to principles of economic sustainability, environmental stewardship, and self-determination in respect to its traditional lands and resources.
Document 11: Mike Kanentakeron Mitchell: Mike Kanentakeron Mitchell (or simply Mike Mitchell) is a longtime Canadian Mohawk politician, pioneering First Nations film director and a leading figure in First Nations lacrosse. First elected to the Mohawk Council of Akwesasne in 1982, he began his first term as Grand Chief in 1984. He served on the Mohawk Council almost continuously for more than 30 years, having been reelected as Grand Chief as recently as 2012.
Document 12: Penobscot: The Penobscot ("Panawahpskek") are an indigenous people in North America with members who reside in the United States and Canada. They are organized as a federally recognized tribe in Maine and as a First Nations band government in the Atlantic provinces.
Document 13: Rebecca Sommer: Rebecca Sommer is a German artist, journalist, photographer, documentary filmmaker, and a human rights, nature rights and climate justice activist. She works with international NGO's in special consultative status to the United Nations (ECOSOC) in participatory status with the Council of Europe, and civil society observer status to the United Nations Framework Convention on Climate Change (UNFCCC). She convened and co-founded in 2001 Earth Peoples in NYC, a global network working together to promote natural and human rights, with special focus on Indigenous Peoples, Climate Change and the Rights of Mother Earth. 2004 she was commissioned by the United Nations to film and produce the awareness-raising video "Indigenous Peoples and the United Nations Nr.1", which was first presented at the Dag Hammarskjöld Library Auditorium at the United Nations Headquarters. In 2007, prior to the adoption of the United Nations Declaration on the Rights of Indigenous Peoples at the UN General Assembly, she created a video lobby-tool"Discussions on the UN Declaration on the Rights of Indigenous Peoples" to encourage discussions with a number of countries that expressed concern about some key issues, such as self-determination, access to lands, territories and resources and the lack of a clear definition of the term indigenous. UN agencies UNHCHR and UNHCHR as well states such as Bolivia, Guatemala, Mexico and Germany supported her awareness-raising efforts and enabled during the year several film screenings of her work to encourage debates among states that were reluctant to adopt the Declaration. Since 2013 she is the president of the Arbeitsgruppe Flucht+Menschenrechte (AG F+M), a network supporting refugees in Europe.
Document 14: Abenaki: The Abenaki (Abnaki, Abinaki, Alnôbak) are a Native American tribe and First Nation. They are one of the Algonquian-speaking peoples of northeastern North America. The Abenaki live in Quebec and the Maritimes of Canada and in the New England region of the United States, a region called "Wabanahkik" ("Dawn Land") in the Eastern Algonquian languages. The Abenaki are one of the five members of the Wabanaki Confederacy.
Document 15: Lenape: The Lenape ( or ), also called the Lenni Lenape and the Delaware, are an indigenous people of the Northeastern Woodlands, who live in Canada and the United States. They are also called Delaware Indians and their historical territory included present-day New Jersey and eastern Pennsylvania along the Delaware River watershed, New York City, western Long Island, and the Lower Hudson Valley.
ground_truth: the Atlantic provinces