tokens: Then , if application start for the first time ( to example , you have string language setting and it 's by default null or "" , this would be a flag what no language is selected yet ) , you detect default os language
ner_tags: O O O O O O O O O O O O O O O B-Data_Type O O O O O O O B-Value O B-Value O O O O O O O O O O O O O O O O O O O