Task: Text Categorization
Input (English): Context: Melolobium is a genus of 15 species of flowering plants belonging to the legume family (Fabaceae). It is native to southern Africa where it is found in south and east Namibia southwest Botswana and most of South Africa.
Question: The document can be classified to which topic? 
Options: 1)Album, 2)Animal, 3)Village, 4)WrittenWork, 5)Plant
Output (English): 5