comment: collections are concepts or not?

I see...

"There is consensus that a 'node label' does not represent a label for a
concept in its own right"

--http://www.w3.org/TR/2005/WD-swbp-skos-core-guide-20050510/#seccollections


and just below it I see a diagram wherein

 ex:milk skos:narrower [ rdf:type skos:Collection ].

and we have skos:narrower rdfs:subPropertyOf skos:semanticRelation,
so that

 ex:milk skos:semanticRelation [ rdf:type skos:Collection ].

and
  and skos:semanticRelation rdfs:range skos:Concept
so that

 ex:milk skos:semanticRelation
   [ rdf:type skos:Collection, skos:Concept ].

so the collection is a concept after all.

Please fix this inconsistency between the example and the prose one
way or another.

I suggest keeping Collections and Concepts disjoint, and introducing
a narrowerCollection property.

-- 
Dan Connolly, W3C http://www.w3.org/People/Connolly/
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