A dog playing with a dog toy as someone tries to pull it from its mouth.
someone playing with dog
A dog playing with someone and someone playing with a dog are the same thing.
exists e1 p1 x1 x2 x3 x4 x5 x6.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2.(from(e2,x6) & Theme(e2,x2) & Actor(e2,x1) & v_pull(e2)) & n_mouth(x6) & of(x6,x1) & n_thing(x1) & n_thing(x2) & as(x1,x5) & n_person(x5) & with(x1,x3) & n_toy(x3) & of(x3,x4) & n_dog(x4) & n_playing(x1) & of(x1,x2) & n_dog(x2))
exists e1 x1 x2 x3.(a_topic(x1) & with(e1,x3) & n_dog(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_person(x1))