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This exception has no message.
java.util.ConcurrentModificationException: 	at com.hp.hpl.jena.mem.ArrayBunch$2.hasNext(ArrayBunch.java:109)	at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:64)	at com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:43)	at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:64)	at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:64)	at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:64)	at com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:43)	at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:86)	at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:86)	at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:64)	at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:86)	at com.hp.hpl.jena.ontology.impl.OWLProfile$SupportsCheck.allTypes(OWLProfile.java:241)	at com.hp.hpl.jena.ontology.impl.OWLProfile$SupportsCheck.hasType(OWLProfile.java:284)	at com.hp.hpl.jena.ontology.impl.OWLProfile$3.doCheck(OWLProfile.java:331)	at com.hp.hpl.jena.ontology.impl.OWLProfile.isSupported(OWLProfile.java:199)	at com.hp.hpl.jena.ontology.impl.OntClassImpl$1.canWrap(OntClassImpl.java:90)	at com.hp.hpl.jena.ontology.impl.OntClassImpl$1.wrap(OntClassImpl.java:78)	at com.hp.hpl.jena.enhanced.Personality.newInstance(Personality.java:84)	at com.hp.hpl.jena.enhanced.EnhGraph.getNodeAs(EnhGraph.java:130)	at com.hp.hpl.jena.ontology.impl.OntModelImpl.findByURIAs(OntModelImpl.java:2768)	at com.hp.hpl.jena.ontology.impl.OntModelImpl.getOntClass(OntModelImpl.java:869)	at edu.cornell.mannlib.vitro.webapp.reasoner.SimpleReasoner.addedTBoxStatement(SimpleReasoner.java:239)	at edu.cornell.mannlib.vitro.webapp.reasoner.SimpleReasonerTBoxListener$TBoxUpdateProcessor.run(SimpleReasonerTBoxListener.java:104)