The rdfs:ContainerMembershipProperty class has as instances the
properties rdf:_1, rdf:_2, rdf:_3 ... that are used to state that a
resource is a member of a container.
rdfs:ContainerMembershipProperty is a subclass of rdf:Property.
Each instance of
rdfs:ContainerMembershipProperty is an rdfs:subPropertyOf the rdfs:member property.
<rdfs:Class rdf:about="http://www.w3.org/2000/01/rdf-schema#ContainerMembershipProperty">
<rdfs:isDefinedBy rdf:resource="http://www.w3.org/2000/01/rdf-schema#"/>
<rdfs:label>ContainerMembershipProperty</rdfs:label>
<rdfs:comment>The class of container membership properties, rdf:_1, rdf:_2, ...,
all of which are sub-properties of 'member'.</rdfs:comment>
<rdfs:subClassOf rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdfs:Class>
C rdf:_nnn O where nnn is the decimal representation of an integer greater than 0 with no leading zeros, states that O is a member of the container C.
Normally not instantiated as such, but by its instances rdf:_n :
<rdf:Description rdf:about="http://example.org/packages/X11">
<s:DistributionSite>
<rdf:Alt>
<rdf:_1 rdf:resource="ftp://ftp.example.org"/>
<rdf:_2 rdf:resource="ftp://ftp1.example.org"/>
<rdf:_3 rdf:resource="ftp://ftp2.example.org"/>
</rdf:Alt>
</s:DistributionSite>
</rdf:Description>
Container membership properties may be applied to resources other than containers.