The dog is chasing the goat around the yard.
The dog and goat are friends.
The dog and goat are not necessarily friends.
exists e1 x1 x2 x3.(n_yard(x3) & n_goat(x2) & n_dog(x1) & around(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1))
exists p1 x1 x2 x3.(n_goat(x3) & n_dog(x2) & subset_of(x3,x1) & subset_of(x2,x1) & exists x4.((x1 = x4) & n_friend(x4)))