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.

Q: Context: The Pietriș River is a tributary of the Coșna River in Romania.
Question: The document can be classified to which topic? 
Options: 1)NaturalPlace, 2)Athlete, 3)MeanOfTransportation, 4)Animal, 5)Album

A: 1
****
Q: Context: The BMW New Six CS (internal name BMW E9) was a two-door coupé built for BMW by Karmann from 1968 to 1975. It was developed from the New Class-based BMW 2000CS coupé which was enlarged to hold the BMW M30 straight-6 engine used in the E3 sedan.The E9 platform especially the 3.0CSL homologation special was very successful in racing especially in European Touring Car Championship and the Deutsche Rennsport Meisterschaft. This helped to establish BMW's status as a sporty driver's car.
Question: The document can be classified to which topic? 
Options: 1)EducationalInstitution, 2)MeanOfTransportation, 3)Athlete, 4)Film, 5)OfficeHolder

A: 2
****
Q: Context: Dubičiai is a village in Kaniavos eldership (lt) Varėna district municipality Alytus County southeastern Lithuania. According to the 2001 census the village has a population of 388 people. As of the 2011 Census the population was 291.
Question: The document can be classified to which topic? 
Options: 1)Film, 2)Village, 3)EducationalInstitution, 4)OfficeHolder, 5)NaturalPlace

A:
2
****