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RDF Terms
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rico:Relation
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https://www.ica.org/standards/RiC/ontology#Relation
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Relation
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The top level relation class. It connects at least two Things.
An instance of a Relation may have some datatype and object properties : a descriptive
note (datatype property) like any Thing ; certainty (for 'certain', 'quite probable',
'uncertain','unknown'); a date (use either the date datatype property or the Date class
and isAssociatedWithDate object property ; a state (relationState) ; a location (use
Place class and isAssociatedWithPlace object property) ; a source of information that
can be used as an evidence for it (use either source datatype property or hasSource
object property).
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Use when direct, binary object properties are not enough, e.g.
when you need to record a date, a location or any other descriptive element for a
relation (till RDF-Star becomes a W3C recommendation and provides a lighter method for
doing so); or when the relation invloves more than two entities (n-ary relation). It is
recommended to use the subclasses of the Relation class.