Question:
Where was Annelise Riles educated in Sep, 1989?

Context:
 Annelise Riles attended London School of Economics and Political Science from Jan, 1989 to Jan, 1990. 
 Annelise Riles attended University of Cambridge from Jan, 1993 to Jan, 1996. 
 Annelise Riles attended Harvard University from Jan, 1990 to Jan, 1993.

Answer:
London School of Economics and Political Science