Assertion: description | /r/HasProperty | data about data
Facets:
value: often
type: TEMPORAL
value: about data
type: OTHER
Source sentences:
text: An RDF description (such descriptions are often referred to as metadata, or "data about data") can include the authors of the resource, date of creation or updating, the organization of the pages on a site (the sitemap), information that describes content in terms of audience or content rating, key words for search engine data collection, subject categories, and so forth.