Question:
Who was the chair of Embassy of Ukraine, Berlin in Apr, 2010?

Context:
 Natalia Zarudna is the chair of Embassy of Ukraine, Berlin from Sep, 2008 to Dec, 2011. 
 Anatolij Ponomarenko is the chair of Embassy of Ukraine, Berlin from Sep, 1997 to Nov, 2003. 
 Yurii V. Kostenko is the chair of Embassy of Ukraine, Berlin from Dec, 1994 to Sep, 1997. 
 Ihor Dolhov is the chair of Embassy of Ukraine, Berlin from Dec, 2005 to Apr, 2008. 
 S. A. Farenik is the chair of Embassy of Ukraine, Berlin from Nov, 2003 to Jul, 2005. 
 Andriy Melnyk is the chair of Embassy of Ukraine, Berlin from Dec, 2014 to Dec, 2022. 
 Pavlo Klimkin is the chair of Embassy of Ukraine, Berlin from Jun, 2012 to Jun, 2014.

Answer:
Question:
Who was the chair of Embassy of Ukraine, Berlin in Apr, 2010?

Context:
 Natalia Zarudna is the chair of Embassy of Ukraine, Berlin from Sep, 2008 to Dec, 2011. 
 Anatolij Ponomarenko is the chair of Embassy of Ukraine, Berlin from Sep, 1997 to Nov, 2003. 
 Yurii V. Kostenko is the chair of Embassy of Ukraine, Berlin from Dec, 1994 to Sep, 1997. 
 Ihor Dolhov is the chair of Embassy of Ukraine, Berlin from Dec, 2005 to Apr, 2008. 
 S. A. Farenik is the chair of Embassy of Ukraine, Berlin from Nov, 2003 to Jul, 2005. 
 Andriy Melnyk is the chair of Embassy of Ukraine, Berlin from Dec, 2014 to Dec, 2022. 
 Pavlo Klimkin is the chair of Embassy of Ukraine, Berlin from Jun, 2012 to Jun, 2014.

Answer:
user
Natalia Zarudna
assistant
Question:
Who was the chair of Embassy of Ukraine, Berlin in Apr, 2010?

Context:
 Natalia Zarudna is the chair of Embassy of Ukraine, Berlin from Sep, 2008 to Dec, 2011. 
 Anatolij Ponomarenko is the chair of Embassy of Ukraine, Berlin from Sep, 1997 to Nov, 2003. 
 Yurii V. Kostenko is the chair of Embassy of Ukraine, Berlin from Dec, 1994 to Sep, 1997. 
 Ihor Dolhov is the chair of Embassy of Ukraine, Berlin from Dec, 2005 to Apr, 2008. 
 S. A. Farenik is the chair of Embassy of Ukraine, Berlin from Nov, 2003 to Jul, 2005. 
 Andriy Melnyk is the chair of Embassy of Ukraine, Berlin from Dec, 2014 to Dec, 2022. 
 Pavlo Klimkin is the chair of Embassy of Ukraine, Berlin from Jun, 2012 to Jun, 2014.

Answer:
user
Anatolij Ponomarenko
Ihor Dolhov
S. A. Farenik
Pavlo Klimkin
Yurii V. Kostenko
Andriy Melnyk
assistant
Question:
Who was the chair of Embassy of Ukraine, Berlin in Apr, 2010?

Context:
 Natalia Zarudna is the chair of Embassy of Ukraine, Berlin from Sep, 2008 to Dec, 2011. 
 Anatolij Ponomarenko is the chair of Embassy of Ukraine, Berlin from Sep, 1997 to Nov, 2003. 
 Yurii V. Kostenko is the chair of Embassy of Ukraine, Berlin from Dec, 1994 to Sep, 1997. 
 Ihor Dolhov is the chair of Embassy of Ukraine, Berlin from Dec, 2005 to Apr, 2008. 
 S. A. Farenik is the chair of Embassy of Ukraine, Berlin from Nov, 2003 to Jul, 2005. 
 Andriy Melnyk is the chair of Embassy of Ukraine, Berlin from Dec, 2014 to Dec, 2022. 
 Pavlo Klimkin is the chair of Embassy of Ukraine, Berlin from Jun, 2012 to Jun, 2014.

Answer:
user
Natalia Zarudna
assistant