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Semantic MediaWiki (SMW) is an extension to MediaWiki, that allows for annotating semantic data...

Semantic MediaWiki (SMW) is an extension to MediaWiki, that allows for annotating semantic data within wiki pages, thus turning a wiki that incorporates the extension into a semantic wiki. Data that has been encoded can be used in semantic searches, used for aggregation of pages, displayed in formats like maps, calendars and graphs, and exported to the outside world via formats like RDF and CSV. Semantic MediaWiki was initially created by Markus Krötzsch, Denny Vrandečić and Max Völkel, and was first released in 2005. Currently the extension has over 30 developers, although Krötzsch and Vrandečić remain the primary developers. Its development is supported in party by Institute AIFB of the University of Karlsruhe. Every semantic annotation within SMW is a "property" connecting the page on which it resides to some other piece of data, either another page or a data value of some type, using triples of the form "subject, predicate, object". As an example, a page about Germany could have, encoded within it, the fact its capital city is Berlin. On the page "Germany", the syntax would be: which is semantically equivalent to the statement "Germany" "Has capital" "Berlin". In this example