two young women in a library wear backpacks while talking to a woman at a booth for RefWorkss cOS.
A girl graduates in her cap and gown.
One who graduates would not also be wearing backpacks.
(x)
exists e1 x1 x2 x3 x4.(in(e1,x2) & n_gown(x4) & n_cap(x3) & subset_of(x4,x2) & subset_of(x3,x2) & of(x2,x1) & n_female(x1) & Actor(e1,x1) & v_graduate(e1) & n_girl(x1))