. . . "Definition: This is a placeholder for classes, used for annotating the \"Entity\" and its subclasses. Mostly, these are not an \"Entity\" themselves. Examples include references to external databases, controlled vocabularies, evidence and provenance.\n\nRationale: Utility classes are created when simple slots are insufficient to describe an aspect of an entity or to increase compatibility of this ontology with other standards. \n\nUsage: The utilityClass class is actually a metaclass and is only present to organize the other helper classes under one class hierarchy; instances of utilityClass should never be created."^^ . "Definition: This is a placeholder for classes, used for annotating the \"Entity\" and its subclasses. Mostly, these are not an \"Entity\" themselves. Examples include references to external databases, controlled vocabularies, evidence and provenance.\n\nRationale: Utility classes are created when simple slots are insufficient to describe an aspect of an entity or to increase compatibility of this ontology with other standards. \n\nUsage: The utilityClass class is actually a metaclass and is only present to organize the other helper classes under one class hierarchy; instances of utilityClass should never be created."^^ . "Definition: This is a placeholder for classes, used for annotating the \"Entity\" and its subclasses. Mostly, these are not an \"Entity\" themselves. Examples include references to external databases, controlled vocabularies, evidence and provenance.\n\nRationale: Utility classes are created when simple slots are insufficient to describe an aspect of an entity or to increase compatibility of this ontology with other standards. \n\nUsage: The utilityClass class is actually a metaclass and is only present to organize the other helper classes under one class hierarchy; instances of utilityClass should never be created."^^ .