Two people sitting on the ground near a walkway.
Two people sit on a beach by the shoreline.
The two people cannot be by the shoreline if they are sitting near a walkway; walkways are not built close to a shoreline.
exists e1 x1 x2 x3 x4.(n_ground(x3) & a_topic(x1) & on(e1,x3) & near(x3,x4) & n_walkway(x4) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_shoreline(x3) & by(e1,x3) & on(e1,x2) & n_beach(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_2(x1))