Which is the entity associated to a certain tag? Which is the tag associated with a certain photo or events? Who has given a tag to a certain entity? To represent a tagging action, i.e. the action performed by an agent that attaches a label or something with a well-defined semantics (eg. a concept or a frame etc.) to some entity. It is used to connect the Person with the Media s/he appears in. appears in It associates the Tagging action with the tagged Entity. for entity has tagged portion tagged person A small picture of a Person thumbnail It associates the Tagging action with the Tag. using tag The height (in pixels) of the tagged portion rectangle. height It encodes the label of a Tag. label The distance (in pixels) between the top left hand side corner of the tagged portion and the left hand side of the picture. left The distance (in pixels) between the top left hand side corner of the tagged portion and the top side of the picture. top The width (in pixels) of the tagged portion rectangle. width The action of Tagging a certain Image Image tagging A label, an individual with a well defined semantics (e.g. a Frame) or a named graph attached to someone or to something for the purpose of identification or to give other information. Tag The portion of a certain Image tagged with a certain Tag. Tagged Portion This class represents the tagging relation. It includes, a tag, a (tagged) Thing, an agent (i.e. the tagger). The tag can come from a folksonomy, a thesaurus or any other sources with a well-defined sematic. Tagging