Question: What year was the head coach of the 2015 UNLV Rebels Football team born?

Context paragraphs:
Jay Staggs: Jay Staggs (born September 26, 1984) is a former professional American and Canadian football defensive back.  He was signed by the Chicago Bears as an undrafted free agent in 2007.  Staggs attended and played for Dos Pueblos High School from 1999-2002.  He played college football for the UNLV Rebels.  He was a member of the UNLV Rebels football staff as a graduate assistant coaching Safeties from 2012-2014.  After receiving his Masters in Public Administration he was hired by Timm Rosenbach in 2015 as the Defensive Coordinator at Adams State University.  He is cousins with former MLB outfielder Ryan Church.

2012 UNLV Rebels football team: The 2012 UNLV Rebels football team represented the University of Nevada, Las Vegas during the 2012 NCAA Division I FBS football season.  The Rebels were led by third year head coach Bobby Hauck and played their home games at Sam Boyd Stadium.  They were members of the Mountain West Conference.  They finished the season 2–11, 2–6 in Mountain West play to finish in eighth place.  This is the third straight year and seventh time in the last nine years that UNLV has finished with only 2 wins.

2008 UNLV Rebels football team: The 2008 UNLV Rebels football team represented the University of Nevada, Las Vegas during the 2008 NCAA Division I FBS football season.  UNLV competed as a member of the Mountain West Conference (MW) and played their home games at Sam Boyd Stadium in Whitney, Nevada.  The Rebels were led by fourth-year head coach Mike Sanford.  UNLV finished the season with a 5–7 record (MW: 2–6), narrowly missing bowl eligibility.

Tony Sanchez (American football): Anthony Phillip Sanchez (born January 25, 1974) is the head coach of the UNLV Rebels.  Sanchez was hired by the Rebels on December 8, 2014.  He was previously the head football coach at Bishop Gorman High School.

2013 UNLV Rebels football team: The 2013 UNLV Rebels football team represented the University of Nevada, Las Vegas during the 2013 NCAA Division I FBS football season.  The Rebels were led by fourth year head coach Bobby Hauck and played their home games at Sam Boyd Stadium.  They were members of the West Division of the Mountain West Conference.  This was the first season since 2000 where UNLV went to a bowl game.

2010 UNLV Rebels football team: The 2010 UNLV Rebels football team was the 43rd varsity football team to represent the University of Nevada, Las Vegas.  The Rebels played in the Mountain West Conference, and compete each season against the remaining eight members of the conference and one permanent interstate rival: UNR.  The Rebels played a 13-game schedule due to their non-conference road game at Hawaiʻ i.  The Rebels also had non-conference games against Wisconsin and at Idaho and West Virginia.  Bobby Hauck was in first season as the head coach of the Rebels football program, having previously coached at the University of Montana.  The Rebels played their home games at Sam Boyd Stadium in East Las Vegas, Nevada.

Fremont Cannon: The Fremont Cannon (also known as the Nevada–UNLV football rivalry) is the trophy awarded to the winner of the Battle for Nevada, an American college football rivalry game played annually by the Nevada Wolf Pack football team of the University of Nevada, Reno (Nevada) and the UNLV Rebels football team of the University of Nevada, Las Vegas (UNLV).  The trophy was built in 1970 and is a replica of a 19th-century Howitzer cannon that accompanied American explorer and politician John C. Frémont on an expedition to Nevada in the mid 19th century.  Originally fired following a touchdown by the team in possession of the cannon, it has been inoperable since 1999.  The wooden carriage is painted the school color of the team in possession, navy blue for Nevada or scarlet for UNLV.  The trophy is the heaviest and most expensive in college football .

2009 UNLV Rebels football team: The 2009 UNLV Rebels football team was the 42nd varsity football team to represent the University of Nevada, Las Vegas.  The Rebels play in the Mountain West Conference, and compete each season against the remaining eight members of the conference and one permanent interstate rival: UNR.  In 2009, UNLV also played non-conference games at home against Sacramento State, Oregon State and Hawai'i.  Mike Sanford entered his fifth and final season as UNLV's head coach and the Rebels played their home games at Sam Boyd Stadium in East Las Vegas, Nevada

Bill Ireland: Willis "Coach I" Ireland (April 29, 1927 – July 31, 2007) was an American college football and baseball coach in Nevada.  He was the first head coach of the UNLV Rebels football team, UNLV athletic director and founder of the Battle for the Fremont Cannon.  Additionally, he was head baseball coach at the University of Nevada, Reno.

2015 UNLV Rebels football team: The 2015 UNLV Rebels football team represented the University of Nevada, Las Vegas during the 2015 NCAA Division I FBS football season.  The Rebels were led by first year head coach Tony Sanchez and played their home games at Sam Boyd Stadium.  They were members of the West Division of the Mountain West Conference.  They finished the season 3–9, 2–6 in Mountain West play to finish in a tie for fourth place in the West Division.

Supporting paragraphs: 2015 UNLV Rebels football team Tony Sanchez (American football)
Answer: 1974