[{'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: Avast Call Blocker: Avast Call Blocker for iOS automatically identifies or blocks incoming SPAM calls. It is based on Avast's proprietary algorithm running on Avast's servers using crowdsourced data coming from: a) AMS users' Call blocker feature (see details in AMS Privacy Policy), b) SPAM numbers reported through the Call Blocker app by users, c) publicly available sources. The algorithm identifies SPAM numbers and provides them to your iOS device through Apple's CallKit extension."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]