A man on a skateboard poses with a dog.
The dog is big
Not all dogs are big.
exists e1 x1 x2 x3.(with(e1,x3) & n_dog(x3) & Actor(e1,x1) & v_pose(e1) & on(x1,x2) & n_skateboard(x2) & n_man(x1))
exists s1 x1.(n_dog(x1) & Theme(s1,x1) & a_big(s1))