[{'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: Subcontracting. Dropbox will remain liable for all acts or omissions of its Subcontractors or Sub-processors, and for any subcontracted obligations."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]