Task: Text Categorization
Input (English): Context: Pterocarya rhoifolia is a species of tree in the Juglandaceae family that grows in moist areas along riverbanks and mountain streams in Laoshan District China. It grows to 30 m (98 ft) tall flowering from May–July.
Question: The document can be classified to which topic? 
Options: 1)OfficeHolder, 2)MeanOfTransportation, 3)Athlete, 4)Company, 5)Plant
Output (English): 5