- From: Toby Inkster <tai@g5n.co.uk>
- Date: Mon, 22 Feb 2010 23:09:16 +0000
- To: Dan Brickley <danbri@danbri.org>, Kevin Rapley <kevin@digikev.co.uk>
- Cc: public-rdfa@w3.org
<ol
class="menu"
xmlns:skos="http://www.w3.org/2004/02/skos/core#"
xmlns:foaf="http://xmlns.com/foaf/0.1/"
about="http://ukwildlife.co.uk/concepts#wildlife"
typeof="skos:Concept"
rel="skos:narrower">
<!-- The above means that http://ukwildlife.co.uk/concepts#wildlife
is a Concept, and the child elements (the <li> elements) are
related to it by being narrower concepts. -->
<li typeof="skos:Concept">
<!-- Above introduces another Concept, but one without a URI.
Giving the concept a URI (in an 'about' attribute) is generally
a good idea because it allows other people to link to it. -->
<a
rel="foaf:page"
href="/galleries/mammals/"
property="skos:prefLabel"
>Mammals</a>
<!-- Above says that the concept has a page, with address
/galleries/mammals/, and has a preferred label "Mammals".
These attributes apply to the concept defined by the <li>
element, not to the concept defined by the <ol> element,
thanks to RDFa's nesting rules. -->
</li>
<li typeof="skos:Concept">
<a
rel="foaf:page"
href="/galleries/birds-ornithology/"
property="skos:prefLabel">Birds</a>
<!-- The above is similar to the mammals concept. -->
<span rel="skos:related">
<span
typeof="skos:Concept"
property="skos:prefLabel">Ornithology</span>
</span>
<!-- This says that the Birds concept is related to another
concept that has a preferred label "Ornithology".
Previously you were using something like this:
<span property="skos:related">Ornithology</span>
This is wrong though, because the RDFa property attribute
is used to mark literal properties (strings essentially),
whereas the skos:related property is intended to be used to
related between two concepts, not one concept and a literal.
So rel is used instead, the target being a concept that has
a preferred label. -->
</li>
<!-- The other concepts in your example were mostly similar. -->
</ol>
--
Toby A Inkster
<mailto:mail@tobyinkster.co.uk>
<http://tobyinkster.co.uk>
Received on Monday, 22 February 2010 23:10:08 UTC