Definition: In this task, you are given a text which is the body of a document. Your job is to classify the topic of the document into these categories: 1)Company, 2)Educational Institution, 3)Artist, 4)Athlete, 5)Office Holder, 6)Mean of transportation, 7)Building, 8)Natural place, 9)Village, 10)Animal, 11)Plant, 12)Album, 13)Film, 14)Written work. Your output should be the category number. Don't generate anything apart from numbers 1-14.
Input: Text:  Cambridge Health Alliance (CHA) is a healthcare system in Cambridge Somerville and Boston Massachusetts' metro-north communities and one of the academic teaching hospitals of Harvard Medical School.As an integrated healthcare network and one of the Top 100 most integrated health care systems in the nation Cambridge Health Alliance serves patients at more than 30 clinical locations including 15 primary care practices and 20 specialty centers.

7