A small dog standing in the middle of the street.
A lost dog is looking for his owner.
A dog standing in the middle of a street doesn't have to be lost and doesn't have to be looking for his owner.
exists s1 x1 x2 x3 x4.(n_street(x4) & n_middle(x3) & a_topic(x1) & in(x1,x3) & of(x3,x4) & n_standing(x1) & of(x1,x2) & n_dog(x2) & a_small(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(for(e1,x2) & n_owner(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_look(e1) & n_dog(x1) & a_lost(s1) & Theme(s1,x1))