a group of people wear black tophats.
Naked people on a nudist beach.
The people are either naked or have black tophats.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_wear(e1) & n_tophat(x3) & a_black(s1) & Theme(s1,x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists s1 s2 x1 x2.(a_topic(x1) & on(x1,x2) & n_beach(x2) & a_nudist(s2) & Theme(s2,x2) & n_people(x1) & a_naked(s1) & Theme(s1,x1))