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 Alfa Romeo Disco Volante (Flying Saucer) known also as 1900 C52 is a concept car series with production starting from 1952. The cars were racing car concepts with mechanics from the Alfa Romeo 1900 and made in collaboration with Milan based coachbuilder Touring. The engine was a slightly tuned 1900 engine (1997 cc) now producing 158 bhp (118 kW). The car was very streamlined windtunnel tested and the body was built on a tubular space frame.

6