| http://www.w3.org/ns/prov#value | - When a transparent copy of that image is prepared and superposed on the base record, several fundamental observations can be made: (i) if the copy and the base record are perfectly aligned, there is no observable distinguishing characteristic; (ii) if the copy and the base record are rotated relative to one another, there is a generally circular region of anomalous density--low density; and (iii)
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