Question:
Which employer did Christophe Fraser work for in Sep, 1998?

Context:
 Christophe Fraser works for Imperial College London from Dec, 2000 to May, 2002. 
 Christophe Fraser works for University of Oxford from Sep, 1998 to May, 1999. 
 Christophe Fraser works for International University College of Turin from Sep, 1997 to Aug, 1998.

Answer:
Question:
Which employer did Christophe Fraser work for in Sep, 1998?

Context:
 Christophe Fraser works for Imperial College London from Dec, 2000 to May, 2002. 
 Christophe Fraser works for University of Oxford from Sep, 1998 to May, 1999. 
 Christophe Fraser works for International University College of Turin from Sep, 1997 to Aug, 1998.

Answer:
user
University of Oxford
assistant
Question:
Which employer did Christophe Fraser work for in Sep, 1998?

Context:
 Christophe Fraser works for Imperial College London from Dec, 2000 to May, 2002. 
 Christophe Fraser works for University of Oxford from Sep, 1998 to May, 1999. 
 Christophe Fraser works for International University College of Turin from Sep, 1997 to Aug, 1998.

Answer:
user
International University College of Turin
Imperial College London
assistant
Question:
Which employer did Christophe Fraser work for in Sep, 1998?

Context:
 Christophe Fraser works for Imperial College London from Dec, 2000 to May, 2002. 
 Christophe Fraser works for University of Oxford from Sep, 1998 to May, 1999. 
 Christophe Fraser works for International University College of Turin from Sep, 1997 to Aug, 1998.

Answer:
user
University of Oxford
assistant