tokens: In contrast , mutation of the kappa B enhancer results in markedly attenuated activities of both promoters .
folded_tokens: in contrast , mutation of the kappa b enhancer results in markedly attenuated activities of both promoters .
labels: O O O O O O B-protein_domain_or_region I-protein_domain_or_region I-protein_domain_or_region O O O O O O O B-DNA_domain_or_region O