[{'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: Some of our advertisers may participate in a program operated by the Nielsen Company to develop an Online Campaign Ratings service that is comparable to Nielsen's television ratings. When one of their ads appears on our Services, it may contain a web beacon that will record your exposure to the ad, read certain cookies on your browser, and forward this information to one or more operators of third-party websites or other online service on which you may have registered. If the third-party operator recognizes a cookie that identifies you as one of its registered users, it will append the impression data it receives, which may identify you as a user our Services, with age and gender information before returning the data to Nielsen. Nielsen aggregates the data it receives about a given campaign to create ratings reports for advertisers and publishers. According to Nielsen, these reports measure campaign performance on an aggregate level within various demographic categories and do not identify you personally. For more information about Nielsen's information collection practices and any related opt-out choices, please see the Nielsen.com privacy policy here."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Demographic_Age_3rdParty, Demographic_Gender_3rdParty, Identifier_Cookie_or_similar_Tech_3rdParty.'}]