Definition: 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.
Input: Context: Ancillista cingulata is a species of sea snail a marine gastropod mollusk in the family Olividae the olives.
Question: The document can be classified to which topic? 
Options: 1)Film, 2)EducationalInstitution, 3)Animal, 4)OfficeHolder, 5)Athlete

3