[{'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: We may provide you the opportunity to participate in surveys on the Comcast Web Services. If you participate, we may request certain PII from you. Participation in these surveys is completely 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 demographic information (such as zip code)."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_1stParty, Contact_ZIP_1stParty, Demographic_1stParty.'}]