Question:
Who was the chair of German Medical Association in Jan, 2019?

Context:
 Jörg-Dietrich Hoppe is the chair of German Medical Association from Jan, 1999 to Jan, 2011. 
 Hans Joachim Sewering is the chair of German Medical Association from Jan, 1973 to Jan, 1977. 
 Karsten Vilmar is the chair of German Medical Association from Jan, 1977 to Jan, 1999. 
 Frank Ulrich Montgomery is the chair of German Medical Association from Jun, 2011 to May, 2019.

Answer:
Question:
Who was the chair of German Medical Association in Jan, 2019?

Context:
 Jörg-Dietrich Hoppe is the chair of German Medical Association from Jan, 1999 to Jan, 2011. 
 Hans Joachim Sewering is the chair of German Medical Association from Jan, 1973 to Jan, 1977. 
 Karsten Vilmar is the chair of German Medical Association from Jan, 1977 to Jan, 1999. 
 Frank Ulrich Montgomery is the chair of German Medical Association from Jun, 2011 to May, 2019.

Answer:
user
Frank Ulrich Montgomery
assistant
Question:
Who was the chair of German Medical Association in Jan, 2019?

Context:
 Jörg-Dietrich Hoppe is the chair of German Medical Association from Jan, 1999 to Jan, 2011. 
 Hans Joachim Sewering is the chair of German Medical Association from Jan, 1973 to Jan, 1977. 
 Karsten Vilmar is the chair of German Medical Association from Jan, 1977 to Jan, 1999. 
 Frank Ulrich Montgomery is the chair of German Medical Association from Jun, 2011 to May, 2019.

Answer:
user
Karsten Vilmar
Hans Joachim Sewering
Jörg-Dietrich Hoppe
assistant
Question:
Who was the chair of German Medical Association in Jan, 2019?

Context:
 Jörg-Dietrich Hoppe is the chair of German Medical Association from Jan, 1999 to Jan, 2011. 
 Hans Joachim Sewering is the chair of German Medical Association from Jan, 1973 to Jan, 1977. 
 Karsten Vilmar is the chair of German Medical Association from Jan, 1977 to Jan, 1999. 
 Frank Ulrich Montgomery is the chair of German Medical Association from Jun, 2011 to May, 2019.

Answer:
user
Frank Ulrich Montgomery
assistant