Artists working on a mosaic on the ground.
men and women working on a mosaic
Not all men and women are artists.
exists e1 x1 x2 x3.(n_ground(x3) & on(e1,x3) & on(e1,x2) & n_mosaic(x2) & Actor(e1,x1) & v_work(e1) & n_artist(x1))
exists e1 s1 x1 x2 x3 x4.(a_topic(s1) & on(e1,x4) & n_mosaic(x4) & Actor(e1,x3) & v_work(e1) & (s1 = x3) & n_woman(x2) & n_man(x1) & subset_of(x2,s1) & subset_of(x1,s1))