[{'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: Surveys and contests We sometimes conduct or sponsor surveys and contests. Participation in surveys and contests is completely voluntary. If you elect to participate, we may ask you for contact, demographic, and other information. We use this Personal Data to understand our users and their use of the Site and Services and to improve the Site and Services, and we may provide users with the results of such surveys and contests."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_1stParty, Demographic_1stParty.'}]