[{'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: ELEX offers its users numerous online interactive activities. To facilitate participation of the user in interactive activities and issue of prizes from such activities, ELEX usually requires the applicant to fill out forms pertaining to his/her personal interests in addition to contact information (i.e. mailing address and phone number). This information is used by ELEX to compile aggregate data on its users. If the user does not want to supply the requested information and partake in the interactive activities, it is completely at the user's discretion."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_1stParty, Contact_Phone_Number_1stParty, Contact_Postal_Address_1stParty.'}]