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:  The Tel Aviv Towers are a complex of four skyscrapers in the city of Tel Aviv Israel. Three buildings in the complex are complete. Towers 1 and 2 are each 140 meters in height have 34 floors and were built between 1998 and 2000. Each has 23000 sqm of residential space and 225 apartments. The towers were designed by Riskin Architects.

7