People playing tug-of-war in the sand.
They are playing tug of war.
They are playing tug of war which can be completely inferred from people playing tug-of-war in the sand.
exists e1 x1 x2 x3 x4.(n_sand(x4) & a_topic(x1) & in(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_tug-of-war(x3) & (x1 = x2) & n_people(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & of(x2,x1) & n_war(x1) & n_tug(x2) & n_thing(x1))