Question:
Which employer did Phoebe S. Leboy work for in Mar, 1966?

Context:
 Phoebe S. Leboy works for Perelman School of Medicine at the University of Pennsylvania from Jan, 1963 to Jan, 1966. 
 Phoebe S. Leboy works for Weizmann Institute of Science from Jan, 1966 to Jan, 1967. 
 Phoebe S. Leboy works for Bryn Mawr College from Jan, 1962 to Jan, 1963.

Answer:
Weizmann Institute of Science