tokens: Also , you should not be storing date values in VARCHAR(255) ; you should use DATE or perhaps DATETIME YEAR TO DAY ( a weird way of spelling DATE - though the underlying format is different , using 5 bytes on disk instead of 4 for a plain DATE ) , or perhaps DATETIME YEAR TO SECOND ( a funny way of spelling TIMESTAMP ) , or .. .
ner_tags: O O O O O O O O O O B-Data_Type O O O O B-Data_Type O O B-Data_Type I-Data_Type I-Data_Type I-Data_Type O O O O O O B-Data_Type O O O O O O O O O O O O B-Device O O O O O O B-Data_Type O O O O B-Data_Type I-Data_Type I-Data_Type I-Data_Type O O O O O O B-Data_Type O O O O O