| http://www.w3.org/ns/prov#value | - The illustrated apparatus includes plural cascaded sets, or levels, of sampling circuits including an input set, or level 12, an output set, or level, including sampling circuits 24, 26, 28, 30, 41, 43, 45, and 47 and an intermediate set, or level, comprised of sampling circuits 20 and 32.
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