Question: Where are the majority of members of the conference that the Hilltoppers are in from?

Context paragraphs:
2011–12 WKU Hilltoppers basketball team: The 2011–12 Western Kentucky Hilltoppers men's basketball team represented Western Kentucky University during the 2011–12 NCAA Division I men's basketball season.  The Hilltoppers were led by fourth year head coach Ken McDonald for the first 16 games of the season before he was fired and were then led by former assistant and new head coach Ray Harper for the remainder of the year.  They played their home games at E. A. Diddle Arena and are members of the East Division of the Sun Belt Conference.  They finished the season 16–19, 7–9 in Sun Belt Play to finish in a tie for third place in the East Division.  The Hilltoppers were champions of the Sun Belt Basketball Tournament to earn the conference's automatic bid into the 2012 NCAA Tournament.  It was their 22nd tournament appearance and first since 2009.  WKU was also the first sub-.500 team to make the NCAA Tournament since Coppin State in 2008.  They defeated Mississippi Valley State in the "First Four" round before falling in the second round to Kentucky.

Marshall–Western Kentucky football rivalry: The Marshall–Western Kentucky football rivalry, also known as the Moonshine Throwdown, is an American college football rivalry between the Thundering Herd of the Marshall University and Hilltoppers of Western Kentucky University.  The first game between the Thundering Herd and Hilltoppers was played in 1941.  With the admission of Western Kentucky as a member of Conference USA (CUSA) in 2014, the rivalry became an annual game between these members of the CUSA East Division.

St. Edward's Hilltoppers: The St. Edward's Hilltoppers are the athletic teams that represent St. Edward's University, located in Austin, Texas, in NCAA Division II intercollegiate sporting competitions.  The Hilltoppers compete as members of the Heartland Conference for all 13 varsity sports.  St. Edward's has been a member of the Heartland since 1999.

2015 WKU Hilltoppers football team: The 2015 WKU Hilltoppers football team represented Western Kentucky University (WKU) in the 2015 NCAA Division I FBS football season as members of the East Division of Conference USA.  Led by second year head coach Jeff Brohm, they played their home games at Houchens Industries–L. T. Smith Stadium in Bowling Green, Kentucky.  They finished the season 12–2, 8–0 in C-USA play to be champions of the East Division.  They represented the East Division in the Conference USA Football Championship Game where they defeated Southern Miss to win their first ever C-USA championship.  They were invited to the Miami Beach Bowl where they defeated South Florida.  They were also ranked in the AP Top 25 for the first time in program history.

Heartland Conference: The Heartland Conference is a collegiate athletic conference affiliated with the National Collegiate Athletic Association (NCAA)'s Division II level, which was founded in 1999.  The majority of members are in Texas, with additional members in Arkansas, Kansas, and Oklahoma.  The conference office is located in Waco, Texas.

2013–14 WKU Hilltoppers basketball team: The 2013–14 Western Kentucky Hilltoppers men's basketball team represented Western Kentucky University during the 2013–14 NCAA Division I men's basketball season.  The Hilltoppers were led by head coach Ray Harper in his second full year after coaching the final 19 games in 2011–12.  They played their home games at E. A. Diddle Arena and were members of the Sun Belt Conference.  They finished the season 21–11, 12–6 in Sun Belt play to finish in second place.  They lost in the semifinals of the Sun Belt Conference Tournament where they lost to Louisiana–Lafayette.  Despite having 21 wins, they did not play in a postseason tournament.

2011 WKU Hilltoppers football team: The 2011 WKU Hilltoppers football team represented Western Kentucky University (WKU) in the 2011 NCAA Division I FBS football season.  The Hilltoppers were led by 2nd year head coach Willie Taggart and played their home games at Houchens Industries–L. T. Smith Stadium.  They are members of the Sun Belt Conference.  The Hilltoppers finished with a record of 7–5, 7–1 in Sun Belt play to finish in second place.  The 7 wins and second place conference finish are the Hilltoppers best results since joining the FBS.  Despite being bowl eligible, the Hilltoppers were not invited to a bowl.

2012–13 WKU Hilltoppers basketball team: The 2012–13 Western Kentucky Hilltoppers men's basketball team represented Western Kentucky University during the 2012–13 NCAA Division I men's basketball season.  The Hilltoppers were led by head coach Ray Harper which was his first full year after coaching the final 19 games in 2011–12.  They played their home games at E. A. Diddle Arena and were members of the East Division of the Sun Belt Conference.  They finished the season 20–16, 10–10 in Sun Belt play to finish in fourth place in the East Division.  They were champions of the Sun Belt Tournament, winning the championship game over FIU, to earn an automatic bid to the 2013 NCAA Tournament where they lost in the second round to Kansas.

Battle of the Bluegrass: The Battle of the Bluegrass is the name of the rivalry between the Eastern Kentucky Colonels and the Western Kentucky Hilltoppers.  Both schools were formerly members of the Ohio Valley Conference, and played against each other regularly until Western Kentucky's transition from the NCAA's FCS to FBS in 2008.  The two teams have met 84 times on the football field, with Western Kentucky currently holding a 47–35–3 edge in the all-time series.  The series resumed again in 2017, when Western Kentucky hosted Eastern Kentucky in a game played at Houchens Industries–L. T. Smith Stadium.

2010 WKU Hilltoppers football team: The 2010 WKU Hilltoppers football team represented Western Kentucky University (WKU) in the 2010 NCAA Division I FBS football season.  The Hilltoppers were led by 1st year head coach Willie Taggart and played their home games at Houchens Industries–L. T. Smith Stadium.  They are members of the Sun Belt Conference.

Supporting paragraphs: St. Edward's Hilltoppers Heartland Conference
Answer: Texas