[{'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: The Big Duck web sites may uses cookies to track how and when customers who visit the site. Cookies are pieces of information that a web site transfers to an individual's hard drive for record keeping purposes. Cookies make web surfing easier by saving your passwords and other preferences for you. The use of cookies is an industry standard, and you will find most major web sites use them. Cookies also help us to see which areas of the site are popular and which are not. We can then improve the site based on this information."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Cookie_or_similar_Tech_1stParty.'}]