[{'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: The owner of the site May offer services or products That May be subject to some special conditions That, Depending on the case, substitute, complete and / or modify the present conditions, and Which inform the user in each case."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]