Question: Dana Holgorsen served under what coach that was at the University of Houston from 2007 to 2011?
Context: Dana Carl Holgorsen (born June 21, 1971) is an American football coach and former player.  He is the current head football coach at West Virginia University, having succeeded Bill Stewart on June 10, 2011.  At the end of the 2010 season West Virginia athletic director Oliver Luck announced that Holgorsen was hired as the offensive coordinator for the 2011 season and would become the Mountaineers 33rd head football coach in 2012.  During his coaching career he has served under innovative coaches such as Hal Mumme, Mike Leach, Kevin Sumlin, and Mike Gundy at Oklahoma State. The 2014 West Virginia Mountaineers football team represented West Virginia University in the 2014 NCAA Division I FBS football season.  Playing as a member of the Big 12 Conference (Big 12), the team was led by head coach Dana Holgorsen, in his fourth year.  West Virginia played its home games at Mountaineer Field at Milan Puskar Stadium in Morgantown, West Virginia.  They finished the season 7–6, 5–4 in Big 12 play to finish in a three way tie for fourth place.  They were invited to the Liberty Bowl where they lost to Texas A&M. The 2011 West Virginia Mountaineer football team represented West Virginia University in the 2011 NCAA Division I FBS football season as members of the Big East Conference.  The Mountaineers were led by Dana Holgorsen, who was his first season as head coach.  West Virginia played their home games on Mountaineer Field at Milan Puskar Stadium in Morgantown, West Virginia.  They finished the season 10–3, 5–2 in Big East play to earn a share of the Big East Conference championship with Cincinnati and Louisville.  The Mountaineers earned the league's automatic berth in the BCS due to being the highest ranked of the Big East champions in the final BCS rankings.  They were invited to the Orange Bowl for the first time ever where they defeated Clemson 70–33.  West Virginia is now 3–0 in BCS games and the 70 points in the Orange Bowl is the most points ever scored by one team in a bowl game. Joe Deforest (born April 17, 1965) is an assistant coach, currently serving as the Special Teams Coordinator for the Kansas Jayhawks, and formerly for the West Virginia Mountaineers college football team.  DeForest was named WVU Defensive Coordinator January 14, 2012.  He was reassigned as associate head coach and special teams coordinator following the 2012 season.  DeForest was brought in by WVU Head Coach Dana Holgorsen.  The pair previously worked together in 2010 at Oklahoma State University where Holgerson was the Offensive Coordinator and DeForest, the Special Teams Coordinator and Director of Recruiting.  DeForest's contract with WVU was not renewed in January 2016. The 2012 West Virginia Mountaineers football team represented West Virginia University in the 2012 NCAA Division I FBS football season.  The season marked the Mountaineers' first season as members of the Big 12 Conference.  In addition, the 2012 season was the first for the team since 1942 without a Backyard Brawl matchup against their top rival Pittsburgh due to their exit from the Big East Conference after the 2011 season.  The Mountaineers were led by Dana Holgorsen in his second season as head coach.  Joe DeForest and Keith Patterson served as co-defensive coordinators in their first season at WVU, while Shannon Dawson was elevated to offensive coordinator after serving as the team's receivers coach in the 2011 season.  West Virginia played its home games on Mountaineer Field at Milan Puskar Stadium in Morgantown, West Virginia.  They finished the season 7–6, 4–5 in Big 12 play to finish in a four way tie for fifth place.  They were invited to the Pinstripe Bowl where they were defeated by longtime rival Syracuse. The 2016 West Virginia Mountaineers football team represented West Virginia University in the 2016 NCAA Division I FBS football season.  The Mountaineers played as members of the Big 12 Conference (Big 12) and were led by head coach Dana Holgorsen, in his sixth year.  West Virginia played its home games at Mountaineer Field at Milan Puskar Stadium in Morgantown, West Virginia.  2016 was the 125th season of West Virginia football.  They finished the season 10–3, 7–2 in Big 12 play to finished in a tie for second place.  They received an invitation to the Russell Athletic Bowl where they lost Miami. The 2013 West Virginia Mountaineers football team represented West Virginia University in the 2013 NCAA Division I FBS football season.  Playing as a member of the Big 12 Conference (Big 12), the team was led by head coach Dana Holgorsen, in his third year.  West Virginia played its home games on Mountaineer Field at Milan Puskar Stadium in Morgantown, West Virginia. Kevin Warren Sumlin (born August 3, 1964) is an American football coach and former player who is the head coach at Texas A&M University.  Previously, Sumlin was the head football coach at the University of Houston from 2007 to 2011. The West Virginia Mountaineers football team represents West Virginia University (also referred to as "WVU" or "West Virginia") in the NCAA Football Bowl Subdivision (FBS) of college football.  Dana Holgorsen is WVU's current head coach, the 33rd in the program's history.  West Virginia plays its home games on Mountaineer Field at Milan Puskar Stadium on the campus of West Virginia University in Morgantown, West Virginia.  The Mountaineers compete in the Big 12 Conference. The 2015 West Virginia Mountaineers football team represented West Virginia University in the 2015 NCAA Division I FBS football season.  Playing as a member of the Big 12 Conference (Big 12), the team was led by head coach Dana Holgorsen, in his fifth year.  West Virginia played its home games at Mountaineer Field at Milan Puskar Stadium in Morgantown, West Virginia.  They finished the season 8–5, 4–5 in Big 12 play to finish in a three way tie for fifth place.  They were invited to the Cactus Bowl where they defeated Arizona State
Answer: Kevin Warren Sumlin