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.

Ex Input:
Context: Photographs is an album by Patrick Sky released in 1969.
Question: The document can be classified to which topic? 
Options: 1)Building, 2)Artist, 3)EducationalInstitution, 4)Album, 5)Village

Ex Output:
4


Ex Input:
Context: Nina Arkina (1891 – 1980) was a Russian-born Norwegian writer.She was born in Odessa but lived in Norway. She issued biographical novels about Catherine the Great (1949) Alexander I of Russia (two volumes in 1950 and 1951) Nicholas I of Russia and Alexander Pushkin (1954) Alexander II of Russia (1956) Alexander III of Russia and Nicholas II of Russia (1963) Sonya Kovalevsky (1967) Karl Marx (1968) and Vladimir Lenin (1972).She was married to editor and politician Victor Mogens.
Question: The document can be classified to which topic? 
Options: 1)Album, 2)Company, 3)Artist, 4)Building

Ex Output:
3


Ex Input:
Context: The Celier Xenon 2 (also variously referred to by the manufacturer as the Xenon II) is a series of Polish autogyros that was designed by Frenchman Raphael Celier and produced by his company Celier Aviation of Piotrków Trybunalski Poland. The aircraft is supplied as a kit for amateur construction or as a complete ready-to-fly-aircraft.
Question: The document can be classified to which topic? 
Options: 1)NaturalPlace, 2)Village, 3)WrittenWork, 4)MeanOfTransportation

Ex Output:

4