[{'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: Zynga provides education games, like Words with Friends EDU, which are intended to be enjoyed by parents, teachers, and children of all ages. Zynga may also provide games like Looney Tunes Dash, which are intended for users of all ages. In these games, Zynga does not knowingly collect personal information (as that term is defined under the Children's Online Privacy Protection Act (COPPA)) from users under the age of 13, except as permitted by COPPA. For example, Zynga may collect persistent identifiers to support the internal operations of its games. If Zynga learns that a child under the age of 13 has provided us with personal information that is not subject to a COPPA exception, Zynga will delete such information."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_1stParty.'}]