formal expression of property chains

Hy,

looking at the property chain definitions (S 55-57) in
http://www.w3.org/TR/skos-reference/#xl-labels,
I cannot find them in the formal RDF of skosxl.

Primer says:
http://www.w3.org/TR/2008/WD-skos-primer-20080829/#secrelationshipslabels
"If an instance of xl:Label is attached to a concept by, say, a
skos-xl:altLabel statement, it follows from the SKOS-XL semantics that
the literal form of the xl:Label instance is related to this concept by
a standard skos:altLabel statement. In the above example, ex:FAO
therefore has "FAO"@en" as alternative (literal) label."

How can any RDF tool behave like that and display skosxl:literalForm
"FAO" in this example just like it would display the direct literal of a
skos:altLabel?

Are these semantics informal?
Did I miss something?

Kind regards,
Thomas

-- 
Thomas Bandholtz, thomas.bandholtz@innoq.com, http://www.innoq.com
innoQ Deutschland GmbH, Halskestr. 17, D-40880 Ratingen, Germany
Phone: +49 228 9288490 Mobile: +49 178 4049387 Fax: +49 2102 77160-1

Received on Tuesday, 12 May 2009 06:55:11 UTC