SubjectPredicateObjectGraph
http://standards.iso.org/iso/19119/ed-1/en/
ISO 19119:2005 Service Metadata
http://standards.iso.org/iso/19119/ed-1/en/
http://standards.iso.org/iso/19119/ed-1/en/
http://standards.iso.org/iso/19119/ed-1/en/
http://standards.iso.org/iso/19119/ed-1/en/
http://standards.iso.org/iso/19119/ed-1/en/
http://standards.iso.org/iso/19119/ed-1/en/
http://standards.iso.org/iso/19119/ed-1/en/
http://standards.iso.org/iso/19119/ed-1/en/
http://standards.iso.org/iso/19119/ed-1/en/