[{'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: Metadata: Metadata is usually technical data that is associated with User Content. For example, Metadata can describe how, when and by whom a piece of User Content was collected and how that content is formatted."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]