| 207 |  | * [http://bioontology.org/ NCBO] | 
                        | 208 |  | * [http://bioportal.bioontology.org/ BioPortal] | 
                        | 209 |  | * [http://iws.seu.edu.cn/services/falcons/objectsearch/index.jsp semantic search engine] | 
                        | 210 |  | * [http://swoogle.umbc.edu/ Swoogle] | 
                        | 211 |  | * [http://www.openrdf.org/ Sesame, open source RDF database with support for RDF Schema inference and query] | 
                      
                        |  | 207 | * Standard basic vocabularies | 
                        |  | 208 | * [http://www.w3.org/TR/rdf-syntax-grammar/ RDF Syntax] | 
                        |  | 209 | * [http://www.w3.org/TR/rdf-schema/ RDF Schema] | 
                        |  | 210 | * [http://dublincore.org/documents/dces/ Dublin Core Metadata] | 
                        |  | 211 | * [http://xmlns.com/foaf/spec/ Friend of a Friend] | 
                        |  | 212 | * Ontology repositories | 
                        |  | 213 | * [http://www.schemaweb.info/schema/BrowseSchema.aspx Schema Web] | 
                        |  | 214 | * [http://bioportal.bioontology.org/ BioPortal] | 
                        |  | 215 | * [http://www.wsmo.org/WSMO_ontologies.html WSMO] | 
                        |  | 216 | * Other resources | 
                        |  | 217 | * [http://bioontology.org/ NCBO] | 
                        |  | 218 | * [http://iws.seu.edu.cn/services/falcons/objectsearch/index.jsp semantic search engine] | 
                        |  | 219 | * [http://swoogle.umbc.edu/ Swoogle] | 
                        |  | 220 | * [http://www.openrdf.org/ Sesame, open source RDF database with support for RDF Schema inference and query] |