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Jena is a Java framework for building Semantic Web applications. It provides a programmatic environment for RDF, RDFS and OWL, SPARQL and includes a rule-based inference engine.
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# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#------------------------------------------------------------------
# RDFS rule set v0.1.
# This variant has been tweaked slightly to include some explicit
# clause reordering to improve performance with a backward chainer.
# $Id: rdfs-b.rules,v 1.6 2003-06-13 08:54:23 der Exp $
#------------------------------------------------------------------

#------------------------------------------------------------------
# RDFS Axioms
#------------------------------------------------------------------

-> (rdf:type      rdfs:range rdfs:Class).
-> (rdfs:Resource  rdf:type  rdfs:Class).
-> (rdfs:Literal   rdf:type  rdfs:Class).
-> (rdf:Statement  rdf:type  rdfs:Class).
-> (rdf:nil        rdf:type  rdf:List).
-> (rdf:subject    rdf:type  rdf:Property).
-> (rdf:object     rdf:type  rdf:Property).
-> (rdf:predicate  rdf:type  rdf:Property).
-> (rdf:first      rdf:type  rdf:Property).
-> (rdf:rest       rdf:type  rdf:Property).
        
-> (rdfs:subPropertyOf rdfs:domain rdf:Property).
-> (rdfs:subClassOf rdfs:domain rdfs:Class).
-> (rdfs:domain rdfs:domain rdf:Property).
-> (rdfs:range rdfs:domain rdf:Property).
-> (rdf:subject rdfs:domain rdf:Statement).
-> (rdf:predicate rdfs:domain rdf:Statement).
-> (rdf:object rdfs:domain rdf:Statement).
-> (rdf:first rdfs:domain rdf:List).
-> (rdf:rest rdfs:domain rdf:List).

-> (rdfs:subPropertyOf rdfs:range rdf:Property).
-> (rdfs:subClassOf rdfs:range rdfs:Class).
-> (rdfs:domain rdfs:range rdfs:Class).
-> (rdfs:range rdfs:range rdfs:Class).
-> (rdf:type rdfs:range rdfs:Class).
-> (rdfs:comment rdfs:range rdfs:Literal).
-> (rdfs:label rdfs:range rdfs:Literal).
-> (rdf:rest rdfs:range rdf:List).

-> (rdf:Alt rdfs:subClassOf rdfs:Container).
-> (rdf:Bag rdfs:subClassOf rdfs:Container).
-> (rdf:Seq rdfs:subClassOf rdfs:Container).
-> (rdfs:ContainerMembershipProperty rdfs:subClassOf rdf:Property).

-> (rdfs:isDefinedBy rdfs:subPropertyOf rdfs:seeAlso).

-> (rdf:XMLLiteral rdf:type rdfs:Datatype).
-> (rdfs:Datatype rdfs:subClassOf rdfs:Class).

#------------------------------------------------------------------
# RDFS Closure rules
#------------------------------------------------------------------

# This one could be omitted since the results are not really very interesting!
[rdf1: (?x ?p ?y) -> (?x rdf:type rdfs:Resource)]
[rdf1b: (?x ?p ?y), notLiteral(?y) -> (?y rdf:type rdfs:Resource)]
[rdf4: (?x ?p ?y) -> (?p rdf:type rdf:Property)]
[rdfs7b: (?a rdf:type rdfs:Class) -> (?a rdfs:subClassOf rdfs:Resource)] 

[rdfs2:  (?p rdfs:domain ?c) (?x ?p ?y) -> (?x rdf:type ?c)] 
[rdfs3:  (?p rdfs:range ?c) (?x ?p ?y)  -> (?y rdf:type ?c)] 
[rdfs5a: (?a rdfs:subPropertyOf ?b), (?b rdfs:subPropertyOf ?c) -> (?a rdfs:subPropertyOf ?c)] 
[rdfs5b: (?a rdf:type rdf:Property) -> (?a rdfs:subPropertyOf ?a)] 
[rdfs6:  (?p rdfs:subPropertyOf ?q) (?a ?p ?b) -> (?a ?q ?b)] 
[rdfs7:  (?a rdf:type rdfs:Class) -> (?a rdfs:subClassOf ?a)]

[rdfs8:  unbound(?c) (?a rdfs:subClassOf ?b) (?b rdfs:subClassOf ?c) -> (?a rdfs:subClassOf ?c)] 
[rdfs8:  bound(?c)   (?b rdfs:subClassOf ?c) (?a rdfs:subClassOf ?b) -> (?a rdfs:subClassOf ?c)] 
#[rdfs8:  (?a rdfs:subClassOf ?b), (?b rdfs:subClassOf ?c) -> (?a rdfs:subClassOf ?c)] 

[rdfs9:  (?x rdfs:subClassOf ?y), (?a rdf:type ?x) -> (?a rdf:type ?y)] 
[rdfs10: (?x rdf:type rdfs:ContainerMembershipProperty) -> (?x rdfs:subPropertyOf rdfs:member)]