A man in a helmet is holding on to a railing.
A man is playing Dance Dance Revolution.
One does not need a helmet to be playing Dance Dance Revolution.
exists e1 x1 x2 x3.(r_on(e1) & to(e1,x3) & n_railing(x3) & Actor(e1,x1) & v_hold(e1) & in(x1,x2) & n_helmet(x2) & n_man(x1))
exists e1 x1 x2 x3 x4.(ne_org_revolution(x2) & (x2 = x4) & ne_org_dance(x4) & (x2 = x3) & ne_org_dance(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_man(x1))