These people are waiting in line on a staircase.
Women and men waiting in line on a staircase.
both subjects are waiting in line
exists e1 x1 x2 x3.(n_people(x1) & on(e1,x3) & n_staircase(x3) & in(e1,x2) & n_line(x2) & Actor(e1,x1) & v_wait(e1))
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(s1) & subset_of(x2,s1) & on(e1,x5) & n_staircase(x5) & in(e1,x4) & n_line(x4) & Actor(e1,x3) & v_wait(e1) & (x2 = x3) & n_man(x2) & subset_of(x1,s1) & n_woman(x1))