A man and a child walking outside.
A man is walking a dog down the street.
A child is not a dog.
exists e1 s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & Theme(e1,x4) & Actor(e1,x3) & v_walk(e1) & n_outside(x4) & (x2 = x3) & n_child(x2) & subset_of(x1,s1) & n_man(x1))
exists e1 x1 x2 x3.(n_street(x3) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & down(x2,x3) & n_dog(x2) & n_man(x1))