tokens: I ca n't seem to check the event type for those three cases .. . Also , once I know that I can check the event for add , update or move , how do I stop the user from actually doing it ?
ner_tags: O O O O O O O B-Class O O O O O O O O O O O O O O O O O B-Class O O O O O O O O O O O O O O O O O O