a dog bites a stick.
A cat jumps in a pool.
There is either a cat or a dog.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_bite(e1) & n_stick(x2) & n_dog(x1))
exists e1 x1 x2.(in(e1,x2) & n_pool(x2) & Actor(e1,x1) & v_jump(e1) & n_cat(x1))