Three people walk on the rocks near the water.
People near the water.
The three people are the people near the water, walking on rocks.
exists e1 x1 x2 x3 x4.(n_water(x4) & n_rock(x3) & a_topic(x1) & on(e1,x3) & near(x3,x4) & Theme(e1,x2) & v_walk(e1) & (x1 = x2) & n_people(x1) & card_eq_3(x1))
exists x1 x2.(n_water(x2) & a_topic(x1) & near(x1,x2) & n_people(x1))