[{'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: 7. Sweepstakes and Contests We may provide you the opportunity to participate in a sweepstakes or contest through our Services. If you participate, we will request certain personal information from you. Participation in these sweepstakes and contests are voluntary and you therefore have a choice whether or not to disclose this information. The requested information typically includes contact information (such as name and shipping address), and demographic information (such as zip code)."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_1stParty, Contact_Postal_Address_1stParty, Contact_ZIP_1stParty, Demographic_1stParty.'}]