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          Goal: maximal subset of OWL Full against which current research can assure that a decidable reasoning procedure is realizable
        
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          Goal: maximal subset of OWL Full against which current
        
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          research can assure that a decidable reasoning procedure
        
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          is realizable
        
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          owl:Class,owl:Thing,owl:ObjectProperty,owl:DatatypeProperyare strictly separated
            - i.e., a class cannot be an individual of another class
- object properties’ values must be an owl:Thing
 
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          owl:Class,owl:Thing,owl:ObjectProperty, and
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          owl:DatatypeProperyare strictly separated
            - i.e., a class cannot be an individual of another class
- object properties’ values must be an owl:Thing
                - except for rdf:type,rdfs:subClassOf, …
 
 
- No mixture of owl:Classandrdfs:Classin definitions- essentially: use OWL concepts only!
 
- No statements on RDFS resources
- No characterization of datatype properties possible
- No cardinality constraint on transitive properties 
- Some restrictions on annotations