question: The  The Sweetgrass First Nation reserve was established as part of what agreement between the Canadian monarch? 
answer: Treaty 6
context: Title: Michael Greyeyes
  Passage: Michael Greyeyes (born June 4, 1967) is a Canadian actor, director and educator.  He is Plains Cree from the Muskeg Lake First Nation in Saskatchewan.  His father was from the Muskeg Lake First Nation and his mother was from the Sweetgrass First Nation, both located in Saskatchewan.
  Title: North Spirit Lake First Nation
  Passage: North Spirit Lake First Nation is a small Oji-Cree First Nation reserve in Northern Ontario, located north of Red Lake, Ontario.  It is connected to Sandy Lake First Nation, and Deer Lake First Nation by winter/ice roads.  It is part of the Keewaytinook Okimakanak Council (Northern Chiefs) and the Nishnawbe Aski Nation.
  Title: Chippewas of Georgina Island First Nation 33A
  Passage: Chippewas of Georgina Island First Nation 33A is a First Nations reserve near the shores of Lake Simcoe.  It is one of three reserves of the Chippewas of Georgina Island First Nation.  It is an enclave within Georgina, Ontario, surrounded by the unincorporated community of Virginia Beach.  It is separated from the mainland portion of the Chippewas of Georgina Island First Nation reserve by Black River Road and the private properties along it.
  Title: Sweetgrass First Nation
  Passage: The Sweetgrass First Nation is a Cree First Nation reserve in Cut Knife, Saskatchewan, Canada.  Their territory is located 35 kilometers west of Battleford.  The reserve was established as part of Treaty 6.  The Nation is led by Chief Lori Whitecalf.  Registered population -1751.
  Title: Treaty 6
  Passage: Treaty 6 is an agreement between the Canadian monarch and the Plains and Woods Cree, Assiniboine, and other band governments of First Nations at Fort Carlton and Fort Pitt.  The area agreed upon by the Plains and Woods Cree represents most of the central area of the current provinces of Saskatchewan and Alberta.  One Manitoba band also signed on to the treaty by adhesion in 1898.  The treaty signings began in August 1876, with adhesions added later, the last being signed in 1898 in central Saskatchewan in the Montreal Lake area.
citations: Treaty 6 Sweetgrass First Nation