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 Tansa River is a small river near Mumbai India and is one of Mumbai's water sources via Tansa Lake. It is embanked by one of the largest masonry dams in the world built in 1892. The embankment is nearly 2 miles long 118 ft (36 m) high and 30 metres thick at the base. The dam has 1.31 cubic kilometres capacity of water retention. The dam has about 38 spillway gates. This article incorporates text from a publication now in the public domain:
Question: The document can be classified to which topic?
Options: 1)Album, 2)Company, 3)OfficeHolder, 4)NaturalPlace
[A]: 4

[Q]: Context: Gardnerina is a genus of flowering plants in the daisy family Asteraceae.
Question: The document can be classified to which topic?
Options: 1)Animal, 2)Plant, 3)Artist, 4)Building
[A]: 2

[Q]: Context: The Manuherikia River is located in Otago in the South Island of New Zealand. It rises in the far north of the Maniototo with the West Branch draining the eastern side of the St Bathans Range and the East Branch draining the western flanks of the Hawkdun Range. The river continues southwest through the wide Manuherikia Valley to its confluence with the Clutha River at Alexandra.
Question: The document can be classified to which topic?
Options: 1)Plant, 2)EducationalInstitution, 3)Athlete, 4)NaturalPlace, 5)Film
[A]:
4