Children playing in a stream.
Children are playing in bathing suits.
Children can play in streams in normal wear and not be in bathing suits.
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_stream(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_child(x1))
exists e2 e1 x1 x2.(in(e1,e2) & Theme(e2,x2) & Actor(e2,x1) & v_bath(e2) & n_suit(x2) & Actor(e1,x1) & v_play(e1) & n_child(x1))