[{'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: In addition, some third party advertising technology used by United to deliver advertisements may use separate cookies and other tracking technologies. This technology may be delivered via visits to our website, email messages, apps or otherwise. Web beacons on some pages of our site, in conjunction with these advertising cookies and our other cookies, enable the third-party advertising technology to better understand onsite activity in the aggregate, to recognize a browser's cookie when a browser visits this website, other websites or apps, and to learn which advertisements bring users to our site or our apps or otherwise take action."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Cookie_or_similar_Tech_3rdParty.'}]