[{'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: Advertising: Our Services are supported by advertising. We may use the information described in this Privacy Policy to help make our advertising more relevant to you, to measure its effectiveness and to help recognize your devices to serve you ads on and off of Twitter. For example, when you interact with content in the Twitter for Android app, we may show content (including ads) about those same topics when you use Twitter on the web. We do not use the content you share privately in Direct Messages to serve you ads. Our Twitter Ads Policy also prohibits advertisers from targeting ads based on categories we consider sensitive, such as race, religion, politics, sex life, or health. If you prefer, you can uncheck the Promoted Content setting within your Privacy Settings so that your account will not be matched to information collected by ad partners, or by us directly on those partners' websites or apps, to tailor ads to you. Learn more about your privacy options for tailored ads here and about how ads work on our Services here."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]