| http://www.w3.org/ns/prov#value | - a number greater than about 1.0, and M is a noble metal selected from copper, silver or gold, and a metal hydride region represented by the formula Pdy H1-y wherein y is a number greater than zero and less than 1.0, subject to the proviso that a common boundary separates at least one alloy hydride region from at least one metal hydride region.
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