[{'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: Do use passwords which contain a combination of upper and lower case letters, numbers and special characters e.g. $%^& etc. Do keep passwords securely (never written down, or shared with anyone) and changed periodically"}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]