| gptkbp:instanceOf | gptkb:schema_language 
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                                | gptkbp:category | gptkb:XML_technology Markup language schema
 
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                                | gptkbp:competitor | gptkb:W3C_XML_Schema DTD
 
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                                | gptkbp:designedBy | gptkb:James_Clark 
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                                | gptkbp:expressedIn | attribute constraints constraints on XML structure
 element content models
 mixed content
 namespace constraints
 
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                                | gptkbp:fileExtension | .rnc .rng
 
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                                | gptkbp:fullName | gptkb:Regular_Language_for_XML_Next_Generation 
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                                | gptkbp:hasFeature | simplicity modularity
 extensibility
 expressiveness
 no fixed data type system
 support for external data type libraries
 
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                                | gptkbp:hasSubgroup | ISO/IEC 19757 (Document Schema Definition Languages - DSDL) 
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                                | gptkbp:influenced | gptkb:Schematron gptkb:W3C_XML_Schema
 other XML schema languages
 
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                                | gptkbp:influencedBy | gptkb:RELAX gptkb:TREX
 
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                                | gptkbp:notableFor | gptkb:Saxon gptkb:Sun_Multi-Schema_Validator
 gptkb:XMLStarlet
 gptkb:libxml2
 gptkb:Jing
 Trang
 
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                                | gptkbp:releaseYear | 2001 
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                                | gptkbp:specifies | gptkb:ISO/IEC_19757-2:2008 gptkb:OASIS_RELAX_NG_Specification
 
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                                | gptkbp:standardizedBy | gptkb:ISO/IEC_JTC_1/SC_34 gptkb:OASIS
 true
 
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                                | gptkbp:standardNumber | gptkb:ISO/IEC_19757-2 
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                                | gptkbp:supports | XML namespace-aware validation
 XML syntax
 compact syntax
 data type libraries
 modular schemas
 
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                                | gptkbp:symbol | XML-based compact syntax
 
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                                | gptkbp:usedFor | XML schema validation 
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                                | gptkbp:website | https://relaxng.org/ 
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                                | gptkbp:bfsParent | gptkb:XML_Schema 
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                                | gptkbp:bfsLayer | 5 
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                                | https://www.w3.org/2000/01/rdf-schema#label | RELAX NG 
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