tokens: The way I think about it is , std::random_device is supposed to be like an improved version of seeding with time(NULL) - - that 's a low bar , because time(NULL) is a pretty crappy seed all things considered .
ner_tags: O O O O O O O O B-Class O O O O O O O O O O O B-Function O O O O O O O O O B-Function O O O O O O O O O