[Pellet-users] Possible to retrieve value of property without "traversing" the knowledge base?

[Koh Shu Lin]

Hi all,
 
I'm currently trying out Pellet using OWL API. I have a problem trying to retrieve values from the knowledge base that I've loaded.
 
For example, I have an ontology that describes about Organisation and I would like to retrieve the string content of a datatype property (which is named "productCategory") which is declared under the "Description" concept.
 
The ontology is expressed as follows:
An Organisation (Concept) has a ProductService (through an object property "hasProductService") which consists of a Description (through an object property "hasDescription").
 
I've tried creating a method that traverse through every properties of each concept that is found though a depth-first search, starting from a root concept "Organisation". However I will end up searching endlessly as I have also included inverse functional properties such as "productServiceOf" which will bring me back to the "Organisation" concept.
 
Is there any method that I can efficiently retrieve the string value without searching through every single properties from the root concept (which is "Organisation" in this case)?
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