Question: Ryan Hulings plays for the Dayton Dyanmo, who is his head coach?
Context: The 2004–05 Dayton Flyers men's basketball team represented the University of Dayton during the 2003–04 NCAA Division I men's basketball season.  The Flyers, led by second year head coach Brian Gregory, played their home games at the University of Dayton Arena and were members of the Atlantic 10 Conference.  They finished the season 18–11, 10–6 in A-10 play, finishing second in the A-10's West division.  The Flyers advanced to the quarterfinals of the Atlantic 10 Tournament where their season was ended by Temple.  Dayton was not selected to play in a postseason tournament, ending a streak of 5 consecutive postseason appearances. The 2009–10 Dayton Flyers men's basketball team represented the University of Dayton in the 2009–10 college basketball season.  This was head coach Brian Gregory's seventh season at Dayton.  The Flyers compete in the Atlantic 10 Conference and played their home games at the University of Dayton Arena.  They finished the season 25–12, 8–8 in A-10 play and lost in the quarterfinals of the 2010 Atlantic 10 Men's Basketball Tournament.  They were invited to and were champions of the 2010 National Invitation Tournament. Ryan Hulings (born July 19, 1991) is an American soccer player who currently plays for Dayton Dynamo in the NPSL. The 2015 Buffalo Bills season was the franchise’s 56th overall season as a football team, 46th in the National Football League, third under leadership of general manager Doug Whaley and first under new head coach Rex Ryan, who signed a five-year, $27.5 million contract on January 12, 2015 after having previously spent the past six seasons coaching the division-rival New York Jets, leading them to two straight AFC Championship games in 2009 and 2010, becoming the franchise’s 18th head coach and the fifth in the past seven years in the process.  Ryan replaced Doug Marrone, who opted out of his contract on December 31, 2014 to take advantage of a contract loophole, fearing the Pegulas were going to fire him, hence the reason the Bills entered the 2015 season looking for a new head coach.  Despite the bold prediction made by Ryan at his introductory press conference, where he stated, “I’m not going to let our fans down.  I am not going to do that.  I know it’s been 15 years since the Bills made the playoffs.  Well, get ready, man, we’re going.  We are going,” the Bills were unable to make the playoffs in their first season with Ryan as head coach, finishing with a record of 8-8 (the team’s first since 2002), making it the 16th straight season without a playoff appearance, which became the longest active in major professional sports after Major League Baseball’s Toronto Blue Jays broke their 22-year playoff drought on September 25, 2015.  It was also the first full season under the ownership of Terry and Kim Pegula (whom also own the Buffalo Sabres), having purchased the Bills partway through 2014 after the death of longtime owner Ralph Wilson in March at the age of 95.  The Bills began their season with an open competition for the starting quarterback position after Kyle Orton, the starter for most of the 2014 campaign, retired during the offseason, so the team acquired free agent Tyrod Taylor, a former backup quarterback of the Baltimore Ravens, who won the competition over incumbent second-string quarterback EJ Manuel and trade acquisition Matt Cassel, the latter of whom the team later traded along with a seventh-round pick in 2017 to the Dallas Cowboys, in exchange for a fifth-round draft pick in 2017. Dayton Dynamo are a soccer organization based in Dayton, Ohio.  They are an outdoor team that plays in the fourth-division National Premier Soccer League.  The club plays in the NPSL's Midwest Region.  Great Lakes Conference under the leadership of head coach Dan Griest.  They play their home games at Welcome Stadium. The 2003–04 Dayton Flyers men's basketball team represented the University of Dayton during the 2003–04 NCAA Division I men's basketball season.  The Flyers, led by first year head coach Brian Gregory, played their home games at the University of Dayton Arena and were members of the Atlantic 10 Conference.  They finished the season 24–9, 12–4 in A-10 play, finishing first in the A-10's West division.  Dayton opened the season winning the Maui Invitational.  The Flyers advanced to the finals of the Atlantic 10 Tournament where they were defeated by rival Xavier.  Dayton received an at-large bid to the NCAA Tournament, the program's first consecutive NCAA appearances since the 1960s.  The Flyers lost to DePaul in the first round. The 2010–11 Dayton Flyers men's basketball team represented the University of Dayton in the 2010–11 college basketball season.  This was head coach Brian Gregory's eighth season at Dayton.  The Flyers compete in the Atlantic 10 Conference and played their home games at the University of Dayton Arena.  They finished the season 22–14, 7–9 in A-10 play and lost the championship game of the 2011 Atlantic 10 Men's Basketball Tournament, which hurt their chances to get to the 2011 NCAA Men's Division I Basketball Tournament.  Instead they were invited to the 2011 National Invitation Tournament which they lost in the first round. The 2002–03 Dayton Flyers men's basketball team represented the University of Dayton during the 2002–03 NCAA Division I men's basketball season.  The Flyers, led by ninth year head coach Oliver Purnell, played their home games at the University of Dayton Arena and were members of the Atlantic 10 Conference.  They finished the season 24–6, 13–2 in A-10 play, with both losses coming to regular season champion Xavier.  They won the program's first Atlantic 10 Tournament title after defeating Temple in the championship game.  Dayton received the A-10's automatic bid to the NCAA Tournament where they were upset by Tulsa in the first round.  Following the season, Purnell accepted the head coaching position at Clemson.  He was replaced by Brian Gregory. The 2006–07 Dayton Flyers men's basketball team represented the University of Dayton during the 2006–07 NCAA Division I men's basketball season.  The Flyers, led by fourth year head coach Brian Gregory, played their home games at the University of Dayton Arena and were members of the Atlantic 10 Conference.  They finished the season 19–12, 8–8 in A-10 play.  The Flyers started the season 10-1, with wins over NCAA Tournament teams Louisville, Holy Cross, and Creighton, before stumbling during A-10 play.  The Flyers advanced to the quarterfinals of the Atlantic 10 Tournament where they lost to regular season champion Xavier.  Dayton was not selected to play in a postseason tournament, marking the 3rd consecutive season the Flyers did not play in a postseason tournament. Mike Kelly (born January 26, 1948) is a former American football coach.  He was the head football coach at the University of Dayton from 1981 to 2007.  In 27 years as the head coach at Dayton, he compiled a record of 246–54–1.  He led the Dayton Flyers to the NCAA Division III Football Championship in 1989 and appearances in the title game three other times, in 1981, 1987, and 1991.  Kelly ranks among the top 25 college football coaches of all time in both winning percentage (.819) and wins (246).  Among coaches with at least 25 years of experience, he has the fourth best winning percentage of all time.
Answer: Dan Griest