Task: Explanation
Input (English): Portulacaria is a genus of succulent plant, classified in its own subfamily Portulacarioideae in the family Didiereaceae. It is indigenous to southern Africa. Question: Which is a succulent, Portulacaria or Calamintha? Answer: Portulacaria
Output (English): Portulacaria is a genus of succulent plant, classified in its own subfamily Portulacarioideae in the family Didiereaceae.