Question:
Who was the head of Mauritania in Nov, 2021?

Context:
 Mohamed Salem Ould Béchir is the head of the government of Mauritania from Oct, 2018 to Aug, 2019. 
 Mohamed Ould Bilal is the head of the government of Mauritania from Aug, 2020 to Dec, 2022. 
 Ismail Ould Bedde Ould Cheikh Sidiya is the head of the government of Mauritania from Aug, 2019 to Aug, 2020. 
 Yahya Ould Hademine is the head of the government of Mauritania from Aug, 2014 to Oct, 2018.

Answer:
Question:
Who was the head of Mauritania in Nov, 2021?

Context:
 Mohamed Salem Ould Béchir is the head of the government of Mauritania from Oct, 2018 to Aug, 2019. 
 Mohamed Ould Bilal is the head of the government of Mauritania from Aug, 2020 to Dec, 2022. 
 Ismail Ould Bedde Ould Cheikh Sidiya is the head of the government of Mauritania from Aug, 2019 to Aug, 2020. 
 Yahya Ould Hademine is the head of the government of Mauritania from Aug, 2014 to Oct, 2018.

Answer:
user
Mohamed Ould Bilal
assistant
Question:
Who was the head of Mauritania in Nov, 2021?

Context:
 Mohamed Salem Ould Béchir is the head of the government of Mauritania from Oct, 2018 to Aug, 2019. 
 Mohamed Ould Bilal is the head of the government of Mauritania from Aug, 2020 to Dec, 2022. 
 Ismail Ould Bedde Ould Cheikh Sidiya is the head of the government of Mauritania from Aug, 2019 to Aug, 2020. 
 Yahya Ould Hademine is the head of the government of Mauritania from Aug, 2014 to Oct, 2018.

Answer:
user
Mohamed Salem Ould Béchir
Yahya Ould Hademine
Ismail Ould Bedde Ould Cheikh Sidiya
assistant
Question:
Who was the head of Mauritania in Nov, 2021?

Context:
 Mohamed Salem Ould Béchir is the head of the government of Mauritania from Oct, 2018 to Aug, 2019. 
 Mohamed Ould Bilal is the head of the government of Mauritania from Aug, 2020 to Dec, 2022. 
 Ismail Ould Bedde Ould Cheikh Sidiya is the head of the government of Mauritania from Aug, 2019 to Aug, 2020. 
 Yahya Ould Hademine is the head of the government of Mauritania from Aug, 2014 to Oct, 2018.

Answer:
user
Mohamed Ould Bilal
assistant