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: Lepeophtheirus is a genus of sea lice. The best-known species is L. salmonis the salmon louse. Other species include L. pectoralis which uses flatfish as its host particularly the European flounder.
Question: The document can be classified to which topic? 
Options: 1)Athlete, 2)Village, 3)OfficeHolder, 4)Animal, 5)WrittenWork
[A]: 4


[Q]: Context: Mullica Hill Historic District is located in the Mullica Hill section of Harrison Township Gloucester County New Jersey United States. The district was added to the National Register of Historic Places on April 25 1991.
Question: The document can be classified to which topic? 
Options: 1)EducationalInstitution, 2)Building, 3)Artist, 4)NaturalPlace, 5)WrittenWork
[A]: 2


[Q]: Context: Robert Pyle Robinson (March 28 1869 – March 4 1939) was an American banker and politician from Wilmington in New Castle County Delaware. He was a member of the Republican Party who served as Governor of Delaware.
Question: The document can be classified to which topic? 
Options: 1)NaturalPlace, 2)Building, 3)WrittenWork, 4)OfficeHolder
[A]:
4