The black dog has a toy in its mouth and a person stands nearby.
A dog and his owner are playing fetch.
The person may not be the dog's owners. The presence of a toy does not confirm they are playing fetch.
exists e1 e2 s1 s2 x1 x2 x3 x4.(n_mouth(x3) & of(x3,x1) & n_thing(x1) & n_dog(x1) & a_black(s1) & Theme(s1,x1) & a_nearby(s2) & Manner(e2,s2) & Actor(e2,x4) & v_stand(e2) & n_person(x4) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & in(x2,x3) & n_toy(x2))
exists e1 s1 x1 x2 x3.(a_fetch(s1) & Manner(e1,s1) & Actor(e1,x1) & v_play(e1) & subset_of(x3,x1) & n_owner(x3) & of(x3,x2) & n_male(x2) & subset_of(x2,x1) & n_dog(x2))