A dog chases a toy in the grass with its owner in the background.
The owner has just thrown a ball for the dog to fetch.
The owner may be present, but it does not mean that they have thrown a ball for the dog to fetch.
exists e1 x1 x2 x3 x4 x5.(n_background(x5) & n_owner(x4) & of(x4,x3) & n_thing(x3) & n_grass(x3) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & in(x2,x3) & with(x3,x4) & in(x4,x5) & n_toy(x2) & n_dog(x1))
exists e1 p1 s1 x1 x2 x3.(n_dog(x3) & n_owner(x1) & a_just(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & for(x2,x3) & Topic(x3,p1) & exists e2.(Actor(e2,x3) & v_fetch(e2)) & n_ball(x2))