A black Labrador retriever in a grassy field returns with a white nubby cylinder in its mouth.
A dog retrieves his favorite toy.
The dog does not have to be male, the article he returns with may not be its favorite toy, and it may even be something  it found, and not something it retrieves.
exists s1 s2 s3 s4 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(x1,x3) & with(x3,x5) & in(x5,x6) & n_mouth(x6) & of(x6,x1) & n_thing(x1) & n_cylinder(x5) & a_nubby(s4) & Theme(s4,x5) & a_white(s3) & Theme(s3,x5) & n_return(x3) & of(x3,x4) & n_field(x4) & a_grassy(s2) & Theme(s2,x3) & n_retriever(x1) & of(x1,x2) & n_labrador(x2) & a_black(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_retrieve(e1) & n_toy(x2) & a_favorite(s1) & Theme(s1,x2) & of(x2,x1) & n_male(x1) & n_dog(x1))