A little girl throwing rocks into a stream.
A little girl throwing rocks with a friend.
We do not know that the little girl is accompanied, or if she is with a friend.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & into(e1,x4) & n_stream(x4) & Theme(e1,x3) & Actor(e1,x2) & v_throw(e1) & n_rock(x3) & (x1 = x2) & n_girl(x1) & a_little(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & with(e1,x4) & n_friend(x4) & Theme(e1,x3) & Actor(e1,x2) & v_throw(e1) & n_rock(x3) & (x1 = x2) & n_girl(x1) & a_little(s1) & Theme(s1,x1))