Two people on a street; one sitting on the planter surrounding a tree.
People are by the trees in the street.
People by the trees are not necessary to be sitting. and there can be more than two people.
exists e1 e2 x1 x2 x3 x4 x5 x6 x7 x8.(n_planter(x6) & a_topic(x1) & on(x1,x2) & subset_of(x4,x2) & on(e1,x6) & Theme(e2,x8) & Actor(e2,x7) & v_surround(e2) & n_tree(x8) & (x6 = x7) & Actor(e1,x5) & v_sit(e1) & (x4 = x5) & n_thing(x4) & card_eq_1(x4) & subset_of(x3,x2) & n_street(x3) & n_people(x1) & card_eq_2(x1))
exists p1 x1 x2 x3.(n_street(x3) & n_tree(x2) & by(x1,x2) & in(x2,x3) & n_people(x1))