Domain of rdfs:member

According to the latest RDF schema document, the domain of the 
rdfs:member property
(which is inherited to all rdf:_nnn properties) is class rdfs:Container.

However, it has been mentioned many times that rdf:_nnn properties can 
be "attached"
to any resource, not only members of the rdfs:Container class.

Furthermore, many test-cases concerning the 
rdf-containers-syntax-vs-schema issue
demonstrate the above fact, that rdf:_nnn properties are attached to any 
resource.

I believe that this is contradictory.

Should a resource with an rdf:_nnn property be considered a member of 
rdfs:Container class,
even if it has been described as a member of another class?

Nick Bassiliades

-- 
**************************************************************
* Dr. Nick Bassiliades                                       *
*                                                            *
* Programming Languages And Software Engineering (PLASE) Lab *
* Logic Programming and Intelligent Systems (LPIS) Group     *
*                                                            *
* Dept. of Informatics, Aristotle University of Thessaloniki *
* 54006 Thessaloniki, Greece                                 *
*                                                            *
* Tel: +30310998418    E-mail: nbassili@csd.auth.gr          *
* Fax: +30310998419    URL:    http://www.csd.auth.gr/~nick  *
**************************************************************