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188 bytes added ,  16:08, 30 August 2018
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=== Object properties ===
 
=== Object properties ===
 
These object properties define what we know about the relation between the classes. These object properties are defined independent of the classes (that is a base idea in OWL). These properties can help the user see how ingredients are related. These relations can be divided into several categories:
 
These object properties define what we know about the relation between the classes. These object properties are defined independent of the classes (that is a base idea in OWL). These properties can help the user see how ingredients are related. These relations can be divided into several categories:
* isDerived to show how one gets from one ingredient to the next;
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* '''isDerived''' to show how one gets from one ingredient to the next;
* hasAdded to show if another ingredient has been added;
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* '''hasAdded''' to show if another ingredient has been added (not sure what the difference with ''isDerived'' is);
* isRemoved to show if another ingredient has been removed;
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* '''isRemoved''' to show if another ingredient has been removed;
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It is possible to come up with many different object properties> The quetsion is when they are useful and when not.
    
==== • Domain / Range ====
 
==== • Domain / Range ====
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