The RDF Schema vocabulary (RDFS)
type: Ontology

Class
comment: The class of classes.
subclass of: Resource

Container
type: Class
comment: The class of RDF containers.
subclass of: Resource

Container Membership Property
type: Class
comment: The class of container membership properties, rdf:_1, rdf:_2, ..., all of which are sub-properties of 'member'.
subclass of: Property

Datatype
type: Class
comment: The class of RDF datatypes.
subclass of: Class

Literal
type: Class
comment: The class of literal values, eg. textual strings and integers.
subclass of: Resource

Resource
type: Class
comment: The class resource, everything.

comment
type: Property
comment: A description of the subject resource.
domain: Resource
range: Literal

domain
type: Property
comment: A domain of the subject property.
domain: Property
range: Class

is defined by
type: Property
comment: The definition of the subject resource.
domain: Resource
range: Resource
sub-property of: see also

label
type: Property
comment: A human-readable name for the subject.
domain: Resource
range: Literal

member
type: Property
comment: A member of the subject resource.
domain: Resource
range: Resource

range
type: Property
comment: A range of the subject property.
domain: Property
range: Class

see also
type: Property
comment: Further information about the subject resource.
domain: Resource
range: Resource

sub-class of
type: Property
comment: The subject is a subclass of a class.
domain: Class
range: Class

sub-property of
type: Property
comment: The subject is a subproperty of a property.
domain: Property
range: Property