Semantic MediaWiki (SMW) adds semantic features to MediaWiki wikis, allowing users to add structured data as facts to pages using properties and types, and developers can build queries, forms, and templates to interact with this structured data. SMW allows wikis to function as knowledge bases by adding a semantic layer to the wiki functionality through properties, classes, queries, and other features that organize and retrieve structured information from pages. The presentation provided an overview of SMW and demonstrated how its features can be used to build and interact with a structured knowledge base within a wiki.