Several children are playing soccer in a field.
Some humans playing
Every human of children are playing
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_field(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_soccer(x2) & n_child(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_human(x1))