"obsolescence"@en . "The state or condition in which a thing, process, or knowledge has become outdated or fallen into disuse. Examples include when machinery, consumer goods, a ritual, etc. has ceased to be relevant due to technological advances, changes in demand, common practices, new research, or for other reasons."@en . "300404908" . . "2016-09-01T08:43:21"^^ . "2016-09-01T08:52:13"^^ . . . "obsolete"@en .