W3C has published a set of URI-s to uniquely identify
Semantic Web entailment regimes.
I added some links to the related specs on the web and explanations in the book
Foundations of Semantic Web Technologies, by Pascal Hitzler, Markus Krötzsch, Sebastian Rudolph, Chapman & Hall; 1 edition (13 Aug 2009), ISBN-10: 142009050X, ISBN-13: 978-1420090505.
The various entailment regimes are:
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