| http://www.w3.org/ns/prov#value | - These can be bro- ken down into two main categories: those based on activities and those based on objects.2.3.1 Conceptual models based on activities The most common types of activities that users are likely to be engaged in when in- teracting with systems are: 1. instructing 2. conversing 3. manipulating and navigating 4. exploring and browsing A first thing to note is that the various kinds of a
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