nfo:RegionOfInterestContent
Content in the area. There is a predefined set of contents in the spec: http://www.metadataworkinggroup.org
http://www.w3.org/2000/01/rdf-schema#Resource nie:InformationElement ╰── nfo:RegionOfInterestContent
nfo:RegionOfInterestContent has the following predefined instances:
nfo:roi-content-undefined
nfo:roi-content-barcode
nfo:roi-content-focus
nfo:roi-content-pet
nfo:roi-content-face