. . "http://collections.sfmoma.org/OBJ25834.htm". . . . . . "1952". . "Cy + Roman Steps (I, II, III, IV, V)"@en. "Source: Freebase - The World's database". . . . . . . . _:qwDVAvgw137. _:qwDVAvgw137 . _:qwDVAvgw137 "cy_plus_roman_steps_i_ii_iii_iv_v".