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: Mucum River is a river of Amazonas state in north-western Brazil.
Question: The document can be classified to which topic? 
Options: 1)Plant, 2)NaturalPlace, 3)EducationalInstitution, 4)WrittenWork

A: 2
****
Q: Context: They Knew Mr. Knight is a 1934 dramatic novel by the British writer Dorothy Whipple.
Question: The document can be classified to which topic? 
Options: 1)Album, 2)NaturalPlace, 3)Building, 4)WrittenWork, 5)Athlete

A: 4
****
Q: Context: Alex James Burnett (born July 26 1987) is an American professional baseball right-handed relief pitcher who is a free agent. He is 6 feet 0 inches (1.83 m) tall and weighs 215 pounds (98 kg). He was drafted in the 12th round of the 2005 Major League Baseball Draft by the Minnesota Twins.
Question: The document can be classified to which topic? 
Options: 1)Artist, 2)Athlete, 3)MeanOfTransportation, 4)Building, 5)OfficeHolder

A:
2
****