I want to know the answer to the following question:
How many presidents, excluding interrims, has Northwestern had?
All the background I'm provided with is that "Northwestern has had sixteen presidents in its history (excluding interim presidents), the current president, Morton O. Schapiro, an economist, having succeeded Henry Bienen whose 14-year tenure ended on August 31, 2009.". Is that enough to answer the question?
Answer: yes