[{'role': 'user', 'content': "Analyze the following clause from a privacy policy and determine if it's fair or unfair. Also identify any privacy practices mentioned: Discontinuation of Services We may decide to discontinue the Services in response to unforeseen circumstances beyond Dropbox's control or to comply with a legal requirement. If we do so, we'll give you reasonable prior notice so that you can export Your Stuff from our systems. If we discontinue Services in this way before the end of any fixed or minimum term you have paid us for, we'll refund the portion of the fees you have pre-paid but haven't received Services for."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]