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.

Context: The XN5N was a prototype United States monoplane trainer aircraft produced by the Naval Aircraft Factory in Philadelphia Pennsylvania in 1941. A single prototype was built and evaluated.The type was not placed in production.
Question: The document can be classified to which topic? 
Options: 1)NaturalPlace, 2)Company, 3)Film, 4)MeanOfTransportation, 5)Athlete
4

Context: Chung Jae Young (born May 2 1977) better known by her stage name J is a Korean R&B/Soul singer-songwriter who is known for her uniquely soft and smooth voice.
Question: The document can be classified to which topic? 
Options: 1)Album, 2)Artist, 3)Building, 4)Film, 5)Animal
2

Context: Euphorbia pirahazo is a species of plant in the Euphorbiaceae family. It is endemic to Madagascar. Its natural habitat is subtropical or tropical dry forests. It is threatened by habitat loss. More than 100 years ago this plant was overcollected for rubber production but it has not been collected recently. It was thought to be nearly extinct by 1921. It is now extremely rare if not extinct.
Question: The document can be classified to which topic? 
Options: 1)Village, 2)Plant, 3)WrittenWork, 4)Building

2