| http://www.w3.org/ns/prov#value | - This network may be used to determine information, such as demographics, about the users 120A-N interested in a certain advertiser, regardless of the specific advertisement.FIG. 4 is a graph 400 illustrating an example of a network of users and advertisers used in the system 300 of FIG. 3 or other systems for optimizing the performance of online advertisements using a network of users and advertis
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