Question:
Who was the chair of Valencian Nationalist Bloc in Dec, 2017?

Context:
 Pere Mayor is the chair of Valencian Nationalist Bloc from Jan, 2000 to Jan, 2003. 
 Enric Morera i Català is the chair of Valencian Nationalist Bloc from Jan, 2016 to Jan, 2021. 
 Josep Maria Pañella i Alcácer is the chair of Valencian Nationalist Bloc from Jan, 2003 to Jan, 2016.

Answer:
Question:
Who was the chair of Valencian Nationalist Bloc in Dec, 2017?

Context:
 Pere Mayor is the chair of Valencian Nationalist Bloc from Jan, 2000 to Jan, 2003. 
 Enric Morera i Català is the chair of Valencian Nationalist Bloc from Jan, 2016 to Jan, 2021. 
 Josep Maria Pañella i Alcácer is the chair of Valencian Nationalist Bloc from Jan, 2003 to Jan, 2016.

Answer:
user
Enric Morera i Català
assistant
Question:
Who was the chair of Valencian Nationalist Bloc in Dec, 2017?

Context:
 Pere Mayor is the chair of Valencian Nationalist Bloc from Jan, 2000 to Jan, 2003. 
 Enric Morera i Català is the chair of Valencian Nationalist Bloc from Jan, 2016 to Jan, 2021. 
 Josep Maria Pañella i Alcácer is the chair of Valencian Nationalist Bloc from Jan, 2003 to Jan, 2016.

Answer:
user
Pere Mayor
Josep Maria Pañella i Alcácer
assistant
Question:
Who was the chair of Valencian Nationalist Bloc in Dec, 2017?

Context:
 Pere Mayor is the chair of Valencian Nationalist Bloc from Jan, 2000 to Jan, 2003. 
 Enric Morera i Català is the chair of Valencian Nationalist Bloc from Jan, 2016 to Jan, 2021. 
 Josep Maria Pañella i Alcácer is the chair of Valencian Nationalist Bloc from Jan, 2003 to Jan, 2016.

Answer:
user
Enric Morera i Català
assistant