[{'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: We select Advertising Providers attentively to maintain compliance with applicable privacy laws hence we only allow the display of contextual advertisements to Apps that are child directed or mixed audience. Furthermore, we flag persistent identifiers used in child directed or mixed audience apps in order to ensure our Advertising Providers are able to comply with child protection legislation namely COPPA restrictions in the US territory, meaning they are allowed to use Personal Information solely for the purposes of internal operations and contextual advertising but are prohibited from contacting a user, including through behavioral advertising; to amass a profile on a user; or use the Information for any other purpose."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_1stParty.'}]