tokens: E.g If I have a Contact Table which has 50 Columns and in few of the related entities I might be interested in FirstName and LastName property is it a good idea to create a lightweight version of Contact table .
ner_tags: O O O O O O B-Data_Structure O O O B-Data_Structure O O O O O O O O O O O O B-Variable O B-Variable O O O O O O O O O O O O O B-Data_Structure O