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[protege-user] How to Relate Different Classes

Igor Toujilov name1390453675 at
Mon Nov 11 16:38:24 PST 2019

Hi Sam,
Please see in-line comments below.

> Sent: Sunday, November 10, 2019 at 10:03 PM
> From: "Samoc" <sjsiperas at>
> To: protege-user at
> Subject: Re: [protege-user] How to Relate Different Classes
> Michael and David
> Thank-you for the replies
> Stupid question - how does once define an instance vs a class  in Protege ??

Please see my previous post about instances (individuals) vs. classes.

> Also is there a tool or programming language that allows one to parse the
> owl document and walk the relationship
> ie if I have a drug
> drug:insulin treats disease:diabetes
> can I walk thru the owl document to get all drugs related to diabetes ?

In Java you can use OWL API to load an ontology from an OWL file. Then you need a reasoner to execute a DL query “treats some diabetes”, which will return a list of drug classes, including insulin.

> Thanks for your input
> --
> Sent from:
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> protege-user at

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