Question:
Who was the head coach of the team FC Viktoria Köln in May, 2013?

Context:
 Marco Antwerpen is the head coach of FC Viktoria Köln from Jul, 2016 to Dec, 2017. 
 Tomasz Kaczmarek is the head coach of FC Viktoria Köln from Jan, 2015 to Jun, 2016. 
 Heiko Scholz is the head coach of FC Viktoria Köln from Jul, 2011 to Nov, 2012. 
 Patrick Glöckner is the head coach of FC Viktoria Köln from Jul, 2018 to May, 2019. 
 Jürgen Kohler is the head coach of FC Viktoria Köln from May, 2019 to May, 2019. 
 Ralf Außem is the head coach of FC Viktoria Köln from Jan, 2013 to May, 2013. 
 Pavel Dochev is the head coach of FC Viktoria Köln from Jun, 2019 to Jan, 2021. 
 Wolfgang Jerat is the head coach of FC Viktoria Köln from Nov, 2012 to Jan, 2013. 
 Claus-Dieter Wollitz is the head coach of FC Viktoria Köln from Jun, 2013 to Dec, 2014. 
 Franz Wunderlich is the head coach of FC Viktoria Köln from May, 2013 to May, 2013.

Answer:
Question:
Who was the head coach of the team FC Viktoria Köln in May, 2013?

Context:
 Marco Antwerpen is the head coach of FC Viktoria Köln from Jul, 2016 to Dec, 2017. 
 Tomasz Kaczmarek is the head coach of FC Viktoria Köln from Jan, 2015 to Jun, 2016. 
 Heiko Scholz is the head coach of FC Viktoria Köln from Jul, 2011 to Nov, 2012. 
 Patrick Glöckner is the head coach of FC Viktoria Köln from Jul, 2018 to May, 2019. 
 Jürgen Kohler is the head coach of FC Viktoria Köln from May, 2019 to May, 2019. 
 Ralf Außem is the head coach of FC Viktoria Köln from Jan, 2013 to May, 2013. 
 Pavel Dochev is the head coach of FC Viktoria Köln from Jun, 2019 to Jan, 2021. 
 Wolfgang Jerat is the head coach of FC Viktoria Köln from Nov, 2012 to Jan, 2013. 
 Claus-Dieter Wollitz is the head coach of FC Viktoria Köln from Jun, 2013 to Dec, 2014. 
 Franz Wunderlich is the head coach of FC Viktoria Köln from May, 2013 to May, 2013.

Answer:
user
Franz Wunderlich
assistant
Question:
Who was the head coach of the team FC Viktoria Köln in May, 2013?

Context:
 Marco Antwerpen is the head coach of FC Viktoria Köln from Jul, 2016 to Dec, 2017. 
 Tomasz Kaczmarek is the head coach of FC Viktoria Köln from Jan, 2015 to Jun, 2016. 
 Heiko Scholz is the head coach of FC Viktoria Köln from Jul, 2011 to Nov, 2012. 
 Patrick Glöckner is the head coach of FC Viktoria Köln from Jul, 2018 to May, 2019. 
 Jürgen Kohler is the head coach of FC Viktoria Köln from May, 2019 to May, 2019. 
 Ralf Außem is the head coach of FC Viktoria Köln from Jan, 2013 to May, 2013. 
 Pavel Dochev is the head coach of FC Viktoria Köln from Jun, 2019 to Jan, 2021. 
 Wolfgang Jerat is the head coach of FC Viktoria Köln from Nov, 2012 to Jan, 2013. 
 Claus-Dieter Wollitz is the head coach of FC Viktoria Köln from Jun, 2013 to Dec, 2014. 
 Franz Wunderlich is the head coach of FC Viktoria Köln from May, 2013 to May, 2013.

Answer:
user
Marco Antwerpen
Heiko Scholz
Patrick Glöckner
Pavel Dochev
Wolfgang Jerat
Claus-Dieter Wollitz
Jürgen Kohler
Tomasz Kaczmarek
Marco Antwerpen
Heiko Scholz
Patrick Glöckner
Pavel Dochev
Wolfgang Jerat
Claus-Dieter Wollitz
Ralf Außem
Jürgen Kohler
Tomasz Kaczmarek
assistant
Question:
Who was the head coach of the team FC Viktoria Köln in May, 2013?

Context:
 Marco Antwerpen is the head coach of FC Viktoria Köln from Jul, 2016 to Dec, 2017. 
 Tomasz Kaczmarek is the head coach of FC Viktoria Köln from Jan, 2015 to Jun, 2016. 
 Heiko Scholz is the head coach of FC Viktoria Köln from Jul, 2011 to Nov, 2012. 
 Patrick Glöckner is the head coach of FC Viktoria Köln from Jul, 2018 to May, 2019. 
 Jürgen Kohler is the head coach of FC Viktoria Köln from May, 2019 to May, 2019. 
 Ralf Außem is the head coach of FC Viktoria Köln from Jan, 2013 to May, 2013. 
 Pavel Dochev is the head coach of FC Viktoria Köln from Jun, 2019 to Jan, 2021. 
 Wolfgang Jerat is the head coach of FC Viktoria Köln from Nov, 2012 to Jan, 2013. 
 Claus-Dieter Wollitz is the head coach of FC Viktoria Köln from Jun, 2013 to Dec, 2014. 
 Franz Wunderlich is the head coach of FC Viktoria Köln from May, 2013 to May, 2013.

Answer:
user
Franz Wunderlich
assistant