Question:
Who was the chair of Ministry of Climate and Environment in Dec, 2018?

Context:
 Ola Elvestuen is the chair of Ministry of Climate and Environment from Jan, 2018 to Jan, 2020. 
 Sveinung Rotevatn is the chair of Ministry of Climate and Environment from Jan, 2020 to Oct, 2021. 
 Espen Barth Eide is the chair of Ministry of Climate and Environment from Oct, 2021 to Dec, 2022.

Answer:
Question:
Who was the chair of Ministry of Climate and Environment in Dec, 2018?

Context:
 Ola Elvestuen is the chair of Ministry of Climate and Environment from Jan, 2018 to Jan, 2020. 
 Sveinung Rotevatn is the chair of Ministry of Climate and Environment from Jan, 2020 to Oct, 2021. 
 Espen Barth Eide is the chair of Ministry of Climate and Environment from Oct, 2021 to Dec, 2022.

Answer:
user
Ola Elvestuen
assistant
Question:
Who was the chair of Ministry of Climate and Environment in Dec, 2018?

Context:
 Ola Elvestuen is the chair of Ministry of Climate and Environment from Jan, 2018 to Jan, 2020. 
 Sveinung Rotevatn is the chair of Ministry of Climate and Environment from Jan, 2020 to Oct, 2021. 
 Espen Barth Eide is the chair of Ministry of Climate and Environment from Oct, 2021 to Dec, 2022.

Answer:
user
Sveinung Rotevatn
Espen Barth Eide
assistant
Question:
Who was the chair of Ministry of Climate and Environment in Dec, 2018?

Context:
 Ola Elvestuen is the chair of Ministry of Climate and Environment from Jan, 2018 to Jan, 2020. 
 Sveinung Rotevatn is the chair of Ministry of Climate and Environment from Jan, 2020 to Oct, 2021. 
 Espen Barth Eide is the chair of Ministry of Climate and Environment from Oct, 2021 to Dec, 2022.

Answer:
user
Ola Elvestuen
assistant