Task: Text Categorization
Input (English): Context: Austrocactus is a genus of cacti with five species endemic of southern South America in Argentina and Chile.They have solitary or branched bodies the ribs may have tubercules and they are not very spiny. The tallest species in this genus is 24 inches. Flowers are pink red or yellow with a characteristic spiny tube.
Question: The document can be classified to which topic? 
Options: 1)OfficeHolder, 2)EducationalInstitution, 3)Building, 4)Plant, 5)Film
Output (English): 4