tokens: It works , but it is basically using the value of a property to do mapping , exposing the possibility of all sorts of errors if they do not match the name of the instance name , or worse if they enter the wrong entity name .
ner_tags: O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O