Question:
Which position did Natallya Kachanava hold in Dec, 2015?

Context:
 Natallya Kachanava holds the position of chairman of the Navapolack City Executive Committee from Jan, 2007 to Dec, 2014. 
 Natallya Kachanava holds the position of Head of the Belarus President Administration from Dec, 2016 to Dec, 2019. 
 Natallya Kachanava holds the position of Deputy Prime Minister of the Republic of Belarus from Dec, 2014 to Dec, 2016.

Answer:
Question:
Which position did Natallya Kachanava hold in Dec, 2015?

Context:
 Natallya Kachanava holds the position of chairman of the Navapolack City Executive Committee from Jan, 2007 to Dec, 2014. 
 Natallya Kachanava holds the position of Head of the Belarus President Administration from Dec, 2016 to Dec, 2019. 
 Natallya Kachanava holds the position of Deputy Prime Minister of the Republic of Belarus from Dec, 2014 to Dec, 2016.

Answer:
user
Deputy Prime Minister of the Republic of Belarus
assistant
Question:
Which position did Natallya Kachanava hold in Dec, 2015?

Context:
 Natallya Kachanava holds the position of chairman of the Navapolack City Executive Committee from Jan, 2007 to Dec, 2014. 
 Natallya Kachanava holds the position of Head of the Belarus President Administration from Dec, 2016 to Dec, 2019. 
 Natallya Kachanava holds the position of Deputy Prime Minister of the Republic of Belarus from Dec, 2014 to Dec, 2016.

Answer:
user
Head of the Belarus President Administration
chairman of the Navapolack City Executive Committee
assistant
Question:
Which position did Natallya Kachanava hold in Dec, 2015?

Context:
 Natallya Kachanava holds the position of chairman of the Navapolack City Executive Committee from Jan, 2007 to Dec, 2014. 
 Natallya Kachanava holds the position of Head of the Belarus President Administration from Dec, 2016 to Dec, 2019. 
 Natallya Kachanava holds the position of Deputy Prime Minister of the Republic of Belarus from Dec, 2014 to Dec, 2016.

Answer:
user
Deputy Prime Minister of the Republic of Belarus
assistant