Question:
Which employer did Friedrich Engel work for in Aug, 1920?

Context:
 Friedrich Engel works for University of Greifswald from Jan, 1904 to Jan, 1913. 
 Friedrich Engel works for Leipzig University from Jan, 1885 to Jan, 1904. 
 Friedrich Engel works for University of Giessen from Jan, 1913 to Jan, 1931.

Answer:
Question:
Which employer did Friedrich Engel work for in Aug, 1920?

Context:
 Friedrich Engel works for University of Greifswald from Jan, 1904 to Jan, 1913. 
 Friedrich Engel works for Leipzig University from Jan, 1885 to Jan, 1904. 
 Friedrich Engel works for University of Giessen from Jan, 1913 to Jan, 1931.

Answer:
user
University of Giessen
assistant
Question:
Which employer did Friedrich Engel work for in Aug, 1920?

Context:
 Friedrich Engel works for University of Greifswald from Jan, 1904 to Jan, 1913. 
 Friedrich Engel works for Leipzig University from Jan, 1885 to Jan, 1904. 
 Friedrich Engel works for University of Giessen from Jan, 1913 to Jan, 1931.

Answer:
user
Leipzig University
University of Greifswald
assistant
Question:
Which employer did Friedrich Engel work for in Aug, 1920?

Context:
 Friedrich Engel works for University of Greifswald from Jan, 1904 to Jan, 1913. 
 Friedrich Engel works for Leipzig University from Jan, 1885 to Jan, 1904. 
 Friedrich Engel works for University of Giessen from Jan, 1913 to Jan, 1931.

Answer:
user
University of Giessen
assistant