<s>[INST] Is it possible that unicorns have ever existed or will ever exist? [/INST] Is it possible Marty McFly and Dr Brown ever existed or will ever exist?</s>\ <s>[INST] Please answer my question. [/INST] I'm sorry, I was just offering a hypothetical answer. Like Marty McFly, Unicorns are fictional. While there is nothing that says that they cannot exist there is no evidence that they do.</s>