[{'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: Upon termination of the Application (i.e. deletion of the hike account) from Your mobile device, hike shall delete all Your Contents from its database and servers within a maximum of 30 days, except to the extent required to be retained by applicable Law. hike reserves the right to send You periodic communications for the purpose of sharing new updates with You. For the avoidance of doubt, it is clarified that any part of Your Content (viz. Your messages, status updates, Profile picture updates, files sent by you) stored by Your contacts/Friends locally on their device may remain after You delete your account till it is deleted by such contacts. Similarly any part of Your Content, which is publicly available to other users of Hike who have you in their list of contacts (i.e. the content included in the image uploaded by You and the associated time stamp) stored by Your contacts may remain after You delete Your account till it is deleted by such contacts. The submission of your 'last seen' time is done on an automatic basis."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_Address_Book_1stParty.'}]