tokens: The promoter region between -173 and -60 contained the strongest activating elements .
folded_tokens: the promoter region between -173 and -60 contained the strongest activating elements .
labels: O B-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O B-DNA_domain_or_region I-DNA_domain_or_region O