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 Q]: Context: The Akaflieg München Mü9 is a tail-less light aircraft that was designed in Germany in 1932.
Question: The document can be classified to which topic? 
Options: 1)WrittenWork, 2)Album, 3)Company, 4)Building, 5)MeanOfTransportation
[EX A]: 5

[EX Q]: Context: Metalhead is the fourteenth studio album by heavy metal band Saxon released in 1999 (see 1999 in music).
Question: The document can be classified to which topic? 
Options: 1)Plant, 2)EducationalInstitution, 3)Animal, 4)Album, 5)Building
[EX A]: 4

[EX Q]: Context: The Im Hinteren Eis is a mountain in the Ötztal Alps on the border between Tyrol Austria and South Tyrol Italy.
Question: The document can be classified to which topic? 
Options: 1)NaturalPlace, 2)MeanOfTransportation, 3)Artist, 4)Company, 5)OfficeHolder
[EX A]:
1