Question:
Who was the chair of Central Union of Potters in Apr, 1912?

Context:
 Nomen nescio is the chair of Central Union of Potters from Jan, 1892 to Jan, 1899. 
 Leopold Bartsch is the chair of Central Union of Potters from Jan, 1922 to May, 1933. 
 Adam Drunsel is the chair of Central Union of Potters from Jan, 1899 to Jan, 1922.

Answer:
Question:
Who was the chair of Central Union of Potters in Apr, 1912?

Context:
 Nomen nescio is the chair of Central Union of Potters from Jan, 1892 to Jan, 1899. 
 Leopold Bartsch is the chair of Central Union of Potters from Jan, 1922 to May, 1933. 
 Adam Drunsel is the chair of Central Union of Potters from Jan, 1899 to Jan, 1922.

Answer:
user
Adam Drunsel
assistant
Question:
Who was the chair of Central Union of Potters in Apr, 1912?

Context:
 Nomen nescio is the chair of Central Union of Potters from Jan, 1892 to Jan, 1899. 
 Leopold Bartsch is the chair of Central Union of Potters from Jan, 1922 to May, 1933. 
 Adam Drunsel is the chair of Central Union of Potters from Jan, 1899 to Jan, 1922.

Answer:
user
Leopold Bartsch
Nomen nescio
assistant
Question:
Who was the chair of Central Union of Potters in Apr, 1912?

Context:
 Nomen nescio is the chair of Central Union of Potters from Jan, 1892 to Jan, 1899. 
 Leopold Bartsch is the chair of Central Union of Potters from Jan, 1922 to May, 1933. 
 Adam Drunsel is the chair of Central Union of Potters from Jan, 1899 to Jan, 1922.

Answer:
user
Adam Drunsel
assistant