tokens: | | | | .---- - day of week ( 0 - 6 ) ( Sunday = 0 or 7 ) OR sun , mon , tue , wed , thu , fri , sat
ner_tags: O O O O O O B-Value I-Value I-Value I-Value I-Value I-Value I-Value I-Value O B-Value I-Value I-Value O B-Value O O B-Value O B-Value O B-Value O B-Value O B-Value O B-Value O B-Value