    Sentence 1: The GPO previousl  closed bookstores — in Sort  Francisco , Boston ., Philadelphia  . Chicago, Birminghom ,-Clevelond  , and Columbus. .    Sentence 2: Since 2001 .. the  agency has closed bookstores in   Francisco -, . Boston,  Philadelphia : Chicago :  Biringhem., Ala... Cleveland,  Columbus , Ohio’, and Woshington