[{'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: 3.6 Sweepstakes, contests & surveys From time to time, we may offer you the opportunity to participate in promotions such as sweepstakes, contests, offers, and/or surveys ("Special Promotions") through the Service. A Special Promotion may be governed by a privacy policy and/or terms and conditions that are additional to, or separate from, this Privacy Policy and the Terms and Conditions of Use. If the provisions of the Special Promotion\'s privacy policy or terms and conditions conflict with this Privacy Policy or the Terms and Conditions of Use, those additional or separate provisions shall prevail. If you participate in a Special Promotion, we may ask you for certain information in addition to what is stated in this Privacy Policy, including personal information. That additional information may be combined with other account information and may be used and shared as described in this Privacy Policy.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]