Question:
Who was the chair of Union of Trade in Jul, 1952?

Context:
 Siegfried Michl is the chair of Union of Trade from Jan, 1952 to Jan, 1954. 
 Margarete Götzelt is the chair of Union of Trade from Jan, 1954 to Jan, 1958. 
 Bruno Sommerer is the chair of Union of Trade from Jan, 1949 to Jan, 1952.

Answer:
Question:
Who was the chair of Union of Trade in Jul, 1952?

Context:
 Siegfried Michl is the chair of Union of Trade from Jan, 1952 to Jan, 1954. 
 Margarete Götzelt is the chair of Union of Trade from Jan, 1954 to Jan, 1958. 
 Bruno Sommerer is the chair of Union of Trade from Jan, 1949 to Jan, 1952.

Answer:
user
Siegfried Michl
assistant
Question:
Who was the chair of Union of Trade in Jul, 1952?

Context:
 Siegfried Michl is the chair of Union of Trade from Jan, 1952 to Jan, 1954. 
 Margarete Götzelt is the chair of Union of Trade from Jan, 1954 to Jan, 1958. 
 Bruno Sommerer is the chair of Union of Trade from Jan, 1949 to Jan, 1952.

Answer:
user
Margarete Götzelt
Bruno Sommerer
assistant
Question:
Who was the chair of Union of Trade in Jul, 1952?

Context:
 Siegfried Michl is the chair of Union of Trade from Jan, 1952 to Jan, 1954. 
 Margarete Götzelt is the chair of Union of Trade from Jan, 1954 to Jan, 1958. 
 Bruno Sommerer is the chair of Union of Trade from Jan, 1949 to Jan, 1952.

Answer:
user
Siegfried Michl
assistant