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: USS L. Mendel Rivers (SSN-686) a Sturgeon-class attack submarine in commission from 1975 to 2001 is the only ship of the United States Navy thus far to have been named for L. Mendel Rivers (19051970) U.S. Representative from South Carolina's 1st Congressional District (19411970).
Question: The document can be classified to which topic?
Options: 1)Animal, 2)Film, 3)Building, 4)MeanOfTransportation, 5)Artist
[EX A]: 4

[EX Q]: Context: Ronald Lee Fellows (born November 7 1957 in South Bend Indiana) is a former American football cornerback in the National Football League having played for the Dallas Cowboys and the Los Angeles Raiders.
Question: The document can be classified to which topic?
Options: 1)Building, 2)Athlete, 3)Plant, 4)MeanOfTransportation, 5)Film
[EX A]: 2

[EX Q]: Context: The Pilgrim River is a 12.9-mile-long (20.8 km) river in Portage Township Houghton County Michigan in the United States. The river flows near the Portage Lake Golf Course and empties into the Keweenaw Waterway which connects to Lake Superior.In 2010 the Pilgrim River Watershed Project formed with the goal to secure easements along the river to keep the river accessible for non-motorized recreation.
Question: The document can be classified to which topic?
Options: 1)Company, 2)MeanOfTransportation, 3)NaturalPlace, 4)OfficeHolder, 5)Athlete
[EX A]:
3