Black dog prancing through the river.
A black dog is running through the snow.
The dog is either prancing or running.  The dog cannot be in both a river and in snow.
exists e1 s1 x1 x2 x3.(n_river(x3) & a_topic(x1) & through(e1,x3) & Actor(e1,x2) & v_prance(e1) & (x1 = x2) & n_dog(x1) & a_black(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_snow(x2) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_black(s1) & Theme(s1,x1))