A young boy swinging upside down from a bar.
A young boy is swinging on a black bar.
Just because a young boy is swinging upside down on a bar does not necessarily mean the boy is on a black bar.
exists e1 s1 x1 x2 x3.(a_topic(x1) & r_upside(e1) & from(e1,x3) & n_bar(x3) & r_down(e1) & Actor(e1,x2) & v_swing(e1) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 s2 x1 x2.(on(e1,x2) & n_bar(x2) & a_black(s2) & Theme(s2,x2) & Actor(e1,x1) & v_swing(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))