Question: Who is the football coach at georgia southern?

Disambiguated questions and answers:
context: Assistant head coach Chad Lunsford was initially appointed as interim head coach for the remainder of the 2017 season and was officially named head coach on November 27, 2017. Lunsford finished out the 2017 season at 2–4, giving the Eagles an overall record of 2–10, the worst record in the program's overall history, and the first time in the modern era that the Eagles posted back-to-back losing seasons.
question: Who has been the football coach at Georgia Southern since 2017?
short_answers: Chad Lunsford
wikipage: Georgia Southern Eagles football

context: No context provided
question: Who was the head football coach at Georgia Southern from 2016-17?
short_answers: Tyson Summers

context: On December 11, 2015, Fritz resigned as the Eagles head coach to accept the head coaching position at Tulane. Assistant head coach and running backs coach Dell McGee was appointed as interim head coach for the GoDaddy Bowl game, where Georgia Southern defeated Bowling Green 58–27.
question: Who was the head football coach at Georgia Southern in 2015?
short_answers: Dell McGee
wikipage: Georgia Southern Eagles football

context: No context provided
question: Who was the head football coach at Georgia Southern from 2014-15?
short_answers: Willie Fritz

Long answers:
knowledge: content: Chad Lunsford (born February 24, 1977) is the current head coach of the Georgia Southern Eagles football team. He was awarded the job on November 27, 2017 after serving as interim for the second half of the season following the firing and departure of Tyson Summers.  
wikipage: Chad Lunsford

content: Tyson Summers (born April 11, 1980) is a college football coach currently serving as a defensive analyst at the University of Florida. Prior to that, Summers served as the defensive coordinator at the University of Colorado. He formerly served as the head coach of the Georgia Southern Eagles football team from 2016 to 2017.
wikipage: Tyson Summers

content: On January 10, 2014, Willie Fritz, formerly the head coach of Sam Houston State, was named as the Eagles' ninth modern era head coach and first of the FBS era.[12] In the Eagles' first FBS season, the team finished the season 9–3 overall and was undefeated in Sun Belt Conference play at 8–0, winning the outright conference championship.
wikipage: Tyson Summers

content: On December 11, 2015, Fritz resigned as the Eagles head coach to accept the head coaching position at Tulane.[14] Assistant head coach and running backs coach Dell McGee was appointed as interim head coach for the GoDaddy Bowl game, where Georgia Southern defeated Bowling Green 58–27.
wikipage: Tyson Summers

content: Tyson Summers was hired on December 21, 2015 to succeed Fritz.
wikipage: Tyson Summers
long_answer: Chad Lunsford is the current head coach of the Georgia Southern Eagles football team. He was awarded the job on November 27, 2017 after serving as interim for the second half of the season following the firing and departure of Tyson Summers, who was coach from 2016-2017. Willie Fritz was named Georgia Southern's ninth modern era head coach on January 10, 2014 and he led the team to win the outright conference championship that year. On December 11, 2015, Fritz resigned as the Eagles head coach and assistant head coach and running backs coach Dell McGee was briefly appointed as interim head coach until Tyson Summer became the new coach on the 21st of that month.