[{'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: Your Advertising Choices You may opt out of receiving interest-based advertising from Microsoft by visiting our opt-out page. When you opt out, your selection will be stored in a cookie that is specific to the web browser you are using. The opt-out cookie has an expiration date of five years. If you delete the cookies on your device, you will need to opt out again."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Cookie_or_similar_Tech_1stParty.'}]