[{'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: Thank you for using Pinterest! We wrote this policy to help you understand what information we collect, how we use it, and what choices you have. Because we're an internet company, some of the concepts below are a little technical, but we've tried our best to explain things in a simple and clear way. We welcome your questions and comments on this policy."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]