/usr/share/sgml/dtd/rdf.dtd is in sgml-data 2.0.10.
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<!-- ===================================================================== -->
<!--
RDF.DTD
XML/SGML element type set for Resource Description Framework
Created from the document:
"Resource Description Framework (RDF) Model and
Syntax Specification "
W3C Recommendation 22 February 1999
http://www.w3.org/TR/REC-rdf-syntax/
Created by:
Rick Jelliffe, Academia Sinica Computing Centre
ricko@gate.sinica.edu.tw
http://xml.ascc.net/
1999-05-01
Copyright (C) 1999 Academia Sinica Computing Centre
Free use granted under the MPL or GPL.
RDF is a simple set of architectural elements which you can use
as the basis for a DTD to describe resources.
You can use this DTD as is, or you can tailor it for stronger
type-checking:
* the elements with ANY declared content types can
have a more specific content model;
* you may add or delete the rdf:_n attributes;
* add the xml:lang and xml:space attribtes willy nilly
Note that the RDF definitions of rdf:li appears to allow
bad mixed content, which is incorrect XML.
Note: RDF is an "architecture" rather than a complete
element type set.
-->
<!--
Corrections from version 1999-02-26
1) BagID changed to NMTOKEN
in response to comments from user:
Bug: bagID is not an IDREF. It's really a second ID attribute,
but it's invalid to have more than one ID attribute so it's
just NMTOKEN now.
You need to point out that any DTD for RDF needs to be extended
with property-specific elements if validity checking is to be done.
ANY doesn't really allow any element, only any *declared* element.
2) 1999-05-01
rdf:subject, rdf:object, rdf:predicate, rdf:type and rdf:value
added, and comments updated.
-->
<!-- =================== PARAMETER ENTITY DECLARATIONS ==================== -->
<!-- [6.9][6.12][6.16] -->
<!ENTITY % propEltAttr
"id ID #IMPLIED
parseType ( Resource | Literal ) #IMPLIED
resource CDATA #IMPLIED
bagID NMTOKEN #IMPLIED
rdf:value CDATA #IMPLIED" >
<!-- =================== ELEMENT TYPE DECLARATIONS =========================== -->
<!-- [6.1][6.2][6.4] -->
<!ELEMENT rdf:RDF ANY >
<!-- The allowed element types here are "typed nodes" and
"containers":
rdf:Description (or an element with the same content
model and attributes but different name, called a
"typed node"),
rdf:Bag,
rdf:Seq, or
rdf:Alt
-->
<!ATTLIST rdf:RDF
xmlns:rdf CDATA #FIXED
"http://www.w3.org/1999/02/22-rdf-syntax-ns#" >
<!-- [6.3][6.5][6.6][6.7][6.8][6.10][6.11][6.13] -->
<!ELEMENT rdf:Description ANY >
<!-- Child elements are called "property elements".
They must have %propEltAttr; attributes.
The property elements can themselves be rdf:Seq, rdf:Alt
or rdf:Bag elements, rdf:subject, rdf:object,
rdf:type, or rdf:predicate, or anything you name yourself,
and they can contain other property elements, nested
descriptions or other elements. If the property element
has parse-type="resource", then it can contain an
element rdf:value; this value can alternatively be
specified using an rdf:value attribute on the property
element.
-->
<!ATTLIST rdf:Description
id ID #IMPLIED
type CDATA #IMPLIED
about CDATA #IMPLIED
aboutEach CDATA #IMPLIED
aboutEachPrefix CDATA #IMPLIED
bagID NMTOKEN #IMPLIED >
<!-- other XML attributes may be specified -->
<!-- [6.25][6.31] -->
<!ELEMENT rdf:Seq ( rdf:li )* >
<!ATTLIST rdf:Seq
id ID #IMPLIED
rdf:_1 CDATA #IMPLIED
rdf:_2 CDATA #IMPLIED
rdf:_3 CDATA #IMPLIED
rdf:_4 CDATA #IMPLIED
rdf:_5 CDATA #IMPLIED
rdf:_6 CDATA #IMPLIED
rdf:_7 CDATA #IMPLIED
rdf:_8 CDATA #IMPLIED >
<!-- the member attributes are a short alternative to rdf:li -->
<!-- [6.26][6.31] -->
<!ELEMENT rdf:Bag ( rdf:li )* >
<!ATTLIST rdf:Bag
id ID #IMPLIED
rdf:_1 CDATA #IMPLIED
rdf:_2 CDATA #IMPLIED
rdf:_3 CDATA #IMPLIED
rdf:_4 CDATA #IMPLIED
rdf:_5 CDATA #IMPLIED
rdf:_6 CDATA #IMPLIED
rdf:_7 CDATA #IMPLIED
rdf:_8 CDATA #IMPLIED >
<!-- the member attributes are a short alternative to rdf:li -->
<!-- [6.27][6.17][6.31] -->
<!ELEMENT rdf:Alt ( rdf:li )* >
<!ATTLIST rdf:Alt
id ID #IMPLIED
rdf:_1 CDATA #IMPLIED
rdf:_2 CDATA #IMPLIED
rdf:_3 CDATA #IMPLIED
rdf:_4 CDATA #IMPLIED
rdf:_5 CDATA #IMPLIED
rdf:_6 CDATA #IMPLIED
rdf:_7 CDATA #IMPLIED
rdf:_8 CDATA #IMPLIED >
<!-- the member attributes are a short alternative to rdf:li -->
<!-- [6.18][6.29][6.30][6.32] [6.33][6.34] -->
<!ELEMENT rdf:li ANY >
<!ATTLIST rdf:li
resource CDATA #IMPLIED
parseType ( Resource | Literal ) #IMPLIED >
<!-- [6.14][6.15][6.19][6.20][6.21][6.22][6.23][6.24] -->
<!-- these productions restate XML rules -->
<!-- Added 1999-05-01, these are important but have been omitted from
the formal syntax for some reason. -->
<!ELEMENT rdf:subject ANY>
<!ATTLIST rdf:subject
%propEltAttr; >
<!ELEMENT rdf:predicate ANY>
<!ATTLIST rdf:predicate
%propEltAttr; >
<!ELEMENT rdf:object ANY>
<!ATTLIST rdf:object
%propEltAttr; >
<!ELEMENT rdf:type ANY>
<!ATTLIST rdf:type
%propEltAttr; >
<!ELEMENT rdf:value ANY>
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