A collie jumping over a white obstacle.
The barricade is white.
The obstacle doesn't imply that it is barricade.
exists e1 s1 x1 x2 x3.(a_topic(x1) & over(e1,x3) & n_obstacle(x3) & a_white(s1) & Theme(s1,x3) & Actor(e1,x2) & v_jump(e1) & (x1 = x2) & n_collie(x1))
exists s1 x1.(n_barricade(x1) & Theme(s1,x1) & a_white(s1))