Question:
Which employer did Dominique Kalifa work for in Jan, 1999?

Context:
 Dominique Kalifa works for Paris Diderot University from Jan, 1995 to Jan, 2000. 
 Dominique Kalifa works for University of Rennes 2 – Upper Brittany from Jan, 2000 to Jan, 2002. 
 Dominique Kalifa works for Sciences Po from Jan, 2008 to Jan, 2015. 
 Dominique Kalifa works for University of Paris 1 Pantheon-Sorbonne from Sep, 2002 to Sep, 2020.

Answer:
Paris Diderot University