Task: Text Categorization
Input (English): Context: The spiny river snail scientific name Io fluvialis is a species of freshwater snail an aquatic mollusk in the family Pleuroceridae. This is the only species in the genus Io. This species is endemic to the USA.
Question: The document can be classified to which topic? 
Options: 1)Album, 2)Athlete, 3)Film, 4)MeanOfTransportation, 5)Animal
Output (English): 5