[{'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 also automatically collect information related to the overall effectiveness of our advertising campaigns via our advertisements delivered on third party web sites, apps and services ("Our Ads"). For example, we may collect information related to the number of people who click on Our Ads, and the number of people who download one of our Apps or other products via Our Ads. We may combine the information we collect via Our Ads with other information we collect via our Apps.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]