Question: For what conference do the Montana State yellowjackets play for?
Context: Tom Parac (born c. 1931) is a former American football player, coach, and college athletics administrator.  He served as the head football coach at Montana State University from 1968 to 1970, compiling a record of 9–20.  Parac was the athletic director at Montana State from 1971 to 1985.  A native of Lewistown, Montana, Parac played college football as a quarterback at Montana State, where he also lettered in basketball and baseball. Dave McAlpin is an Administrative Law Judge in Helena, Montana.  He serves as Chairman of the Montana Tax Appeal Board.  He was appointed to the Board by Gov. Steve Bullock in 2013 and unanimously confirmed to the six-year term by a vote of the Montana State Senate.  He was designated Chairman in 2015.  McAlpin was appointed by the MT Attorney General to direct the Montana State Crime Laboratory from 2009-2012.  He is the only Montana Director elected by his peers to the Board of Directors of the American Society of Crime Lab Directors.  A former Democratic member of the Montana House of Representatives, he represented House District 94 in Missoula during the 2005, 2007, and 2009 legislative sessions until his appointment to the Crime Lab.  In 2006 he was selected to join the Aurthur S. Flemming Fellows of the Institute of Progressive Leadership.  While serving in the Montana Legislature, he served on the Taxation committee and was elected to House Leadership as Minority Whip.  He managed the Smokeless States Initiative in Montana for the Robert Wood Johnson Foundation from 2001-2003.  He was Executive Director of Court Appointed Special Advocates (CASA) in Missoula.  McAlpin served as a congressional aide to Rep. Pat Williams (D-MT) and Sen. Max Baucus (D-MT) in Washington, DC and Montana.  He was the Chief Deputy Clerk of the Montana Supreme Court from 1995-1998. The Montana State University Library (MSU Library) is the academic library of Montana State University, Montana's land-grant university, in Bozeman, Montana, United States.  It is the flagship library for all of the Montana State University System's campuses.  In 1978, the library was named the Roland R. Renne Library to honor the sixth president of the university.  The library supports the research and information needs of Montana's students, faculty, and the Montana Extension Service. Montana State University–Northern (also known as MSU–Northern, or Northern) is a public state university, part of the Montana State University System, located in Havre, in the U.S. state of Montana.  Montana State University–Northern was known as Northern Montana College prior to the restructuring of Montana's public university system.  It has an operating budget for fiscal year 2007 of $12,540,000.  In 1913, the Montana State Legislature approved the establishment of the Northern Montana Agricultural and Manual Training School at Fort Assinniboine, six miles southwest of Havre, but no money was actually appropriated.  The State Legislature amended their original act in 1927 to include certain academic subjects and in 1929, the Legislature appropriated funds to establish the college as a branch of the University of Montana (later renamed the Montana University System).  Northern Montana College opened its doors in September 1929 in temporary quarters in Havre High School, and moved to its present campus in 1932. The 2011 Montana State Bobcats football team represented Montana State University in the 2011 NCAA Division I FCS football season.  The Bobcats were led by fifth-year head coach Rob Ash and played their home games at Bobcat Stadium.  Montana State is a member of the Big Sky Conference.  They finished the season 10–3, 7–1 in Big Sky play to win the conference championship after it was determined on July 26, 2013 by the NCAA that Montana had played its final six games with ineligible players.  Montana State and Montana had finished tied for the conference title at 7-1 prior to the NCAA ruling.  MSU received an at-large bid into the FCS playoffs where they defeated New Hampshire in the second round before falling to Sam Houston State in the quarterfinals. Dehler Park is a multi-use stadium in Billings, Montana.  It is primarily used for baseball and is the home of the Billings Mustangs in the Pioneer League.  It is also the home field of the Montana State University Billings Yellowjackets.  The ballpark opened on June 29, 2008 and has a capacity of 3,071 people (6,000 including standing room only).  It replaced Cobb Field which was a fixture in Billings since the 1930s.  The groundbreaking ceremony took place March 22, 2007. Montana State University Billings (or MSU Billings) is a state university.  Its main campus is located on 110 acres in downtown Billings, Montana, United States.  Formerly Eastern Montana Normal School when it was founded in 1927, it was then renamed in 1949 to Eastern Montana College of Education.  In 1965, it became a full-fledged four-year college as Eastern Montana College.  It merged with Montana State University in 1994 under its present name.  Currently, the university offers associate’s, bachelor's and master's degrees through the University’s five colleges.  The five colleges of Montana State University Billings are Arts and Sciences, Business, Allied Health professions, Education and City College.  It has the third largest campus population in the Montana State University System. The Great Northwest Athletic Conference (GNAC) is a collegiate athletic conference which has historically operated in the northwestern United States, but also currently includes four schools in areas not usually considered part of that region—two in Alaska (neither of which is located in Southeast Alaska, an area often considered part of the Northwest), one in eastern Montana (almost never considered part of the region), and one in the Canadian province of British Columbia (an area included with the Northwest U.S. in the larger Pacific Northwest region). The 2012 Montana State Bobcats football team represented Montana State University in the 2012 NCAA Division I FCS football season.  The Bobcats were led by sixth-year head coach Rob Ash and played their home games at Bobcat Stadium.  They were a member of the Big Sky Conference.  They finished the season 11–2, 7–1 in Big Sky play to share the conference championship with Cal Poly and Eastern Washington.  The received an at–large bid into the FCS playoffs where they defeated Stony Brook in the second round before falling to Sam Houston State in the quarterfinals.  It was the second straight year the Bobcats were knocked out of the playoffs by Sam Houston State. The Montana State Billings Yellowjackets (also MSU Billings Yellowjackets and MSUB Yellowjackets) are the 15 varsity athletic teams that represent Montana State University Billings, located in Billings, Montana, in NCAA Division II intercollegiate sports.  The Yellowjackets compete as members of the Great Northwest Athletic Conference for all sports.
Answer: The Great Northwest Athletic Conference