In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.

Input: Consider Input: Context: The FS E.645 and E.646 are two classes of similar electric locomotives used on Italian railways. They were introduced during the 1950s and they have been retired in 2009.
Question: The document can be classified to which topic? 
Options: 1)WrittenWork, 2)Athlete, 3)Plant, 4)MeanOfTransportation

Output: 4


Input: Consider Input: Context: Akaflieg is an abbreviation for Akademische Fliegergruppe groups of aerodynamical engineering students from individual German Technical Univerties pre and postwar who design aircraft often gliders.
Question: The document can be classified to which topic? 
Options: 1)Athlete, 2)Company, 3)EducationalInstitution, 4)Village, 5)Artist

Output: 2


Input: Consider Input: Context: Ashwood Secondary College is a public government school located in Ashwood Victoria Australia.Ashwood Secondary College offers a wide range of technical subjects along with more traditional subjects. Recently the curriculum has expanded to include an extensive arts programme. Recently Ashwood College received a grant to build a performing arts centre. This is located on the Vannam Drive side of the school connected to its school multi-purpose hall.
Question: The document can be classified to which topic? 
Options: 1)Athlete, 2)NaturalPlace, 3)EducationalInstitution, 4)Plant


Output: 3