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            "@content":"Example ExternProtoDeclare/ProtoInstance usage of X3D/VRML materials, originally converted from SGI's Open Inventor material examples."
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          {
            "@name":"creator",
            "@content":"David Roussel"
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            "@name":"translator",
            "@content":"James Harney, Don Brutzman NPS"
          },
          {
            "@name":"created",
            "@content":"7 April 2002"
          },
          {
            "@name":"modified",
            "@content":"19 January 2025"
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          {
            "@name":"reference",
            "@content":"http://vrmlstuff.free.fr/materials"
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            "@name":"subject",
            "@content":"Universal Media Material Library"
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            "@name":"identifier",
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