| http://www.w3.org/ns/prov#value | - The GUI 200 (FIG. 2A) can also include a mechanism for enabling the user to specify the particular information desired, i.e., specify particular information providers (e.g., news networks, such as CNN, NBC, ABC or CBS, or information services, such as Clarinet???) and data acquisition schedules for both the primary information source 107 and the secondary information source 108.
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