I want to know the answer to the following question:
In 2009, who named Northwestern as one of the top 10 universities in the country in purchasing renewable energy?
All the background I'm provided with is that "In January 2009, the Green Power Partnership (GPP, sponsored by the EPA) listed Northwestern as one of the top 10 universities in the country in purchasing energy from renewable sources.". Is that enough to answer the question?
Answer: yes