| http://www.w3.org/ns/prov#value | - As used herein, the term content refers to any form of video, audio, text, affective or graphic information or representations and any combination thereof. [0024] In the embodiment shown in FIG. 1, presentation system 10 comprises a display device 20 such as an analog television, a digital television, computer monitor, projection system or other apparatus capable of receiving signals containing im
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