An old woman with a white greyhound is standing on the sidewalk.
An old woman and a dog are sitting together.
A greyhound is a type of dog.
exists e1 s1 s2 x1 x2 x3.(n_sidewalk(x3) & on(e1,x3) & Actor(e1,x1) & v_stand(e1) & with(x1,x2) & n_greyhound(x2) & a_white(s2) & Theme(s2,x2) & n_woman(x1) & a_old(s1) & Theme(s1,x1))
exists e1 p1 s1 x1 x2 x3.(exists s2.(Theme(s2,x1) & a_together(s2)) & Topic(e1,p1) & Actor(e1,x1) & v_sit(e1) & subset_of(x3,x1) & n_dog(x3) & subset_of(x2,x1) & n_woman(x2) & a_old(s1) & Theme(s1,x2))