Kids scale a wall as two other people watch.
Two children dangle their feet into a river while others swim.
the kids may be more than two and they cannot scale a wall and swim in the river at the same time
exists e1 x1 x2 x3 x4 x5 x6.(n_people(x5) & a_topic(x1) & Theme(e1,x6) & Actor(e1,x3) & v_watch(e1) & (x1 = x6) & as(x3,x4) & -(x4 = x5) & n_people(x4) & card_eq_2(x4) & n_wall(x3) & n_scale(x1) & (x1 = x2) & ne_nam_kids(x2))
exists e1 p1 x1 x2 x3.(exists e2 x4.(Actor(e2,x4) & v_swim(e2) & -(x4 = x1) & n_person(x4)) & n_person(x1) & while(e1,p1) & into(e1,x3) & n_river(x3) & Theme(e1,x2) & Actor(e1,x1) & v_dangle(e1) & n_foot(x2) & of(x2,x1) & n_thing(x1) & n_child(x1) & card_eq_2(x1))