[{'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: If the email address you provide us is an email address that you access via a wireless device, you understand that your wireless carrier's standard rates apply to these messages, and that you may change your mind at any time and elect to not receive such messages. You also represent that you are the owner or authorized user of the wireless device on which the messages may be received, and that you understand and are authorized to approve the applicable charges."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_E_Mail_Address_1stParty.'}]