[{'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: Limited Permission. Customer grants Dropbox only the limited rights that are reasonably necessary for Dropbox to provide the Services. This limited permission also extends to Subcontractors or Sub-processors."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]