[{'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: EU-US Privacy Shield Program. Dropbox is certified and complies with the EU-US Privacy Shield Program. If the EU-US Privacy Shield Program is invalidated, Dropbox will use commercially reasonable efforts to comply with the resulting alternate or successor EU-US data transfer mechanism."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]