tokens: Now I suspect it is because the result is in JSON instead of a javascript array , now if that is a problem , can anyone please suggest where do I convert the string in to array in the code .
ner_tags: O O O O O O O O O O B-File_Type O O O B-Language B-Data_Structure O O O O O O O O O O O O O O O O O B-Data_Type O O B-Data_Structure O O O O