response: As a bot, I don't eat, but did you know that it's been used as a form of medicine?
original_response: I don't think I have a preference, but the only kind of kale I have ever had is green.  I never knew that it actually had medicinal qualities to it
history: I've been trying to eat healthy and have decided I absolutely love kale! Do you prefer kale with green leaves or kale with purple leaves I prefer the purple but it's easier to find the green in my local store. What's your preference?
knowledge: It was also used as medicinal food source.