A white dog is standing in a pond.
A dog is laying in the sun.
The dog cannot simultaneously be standing and laying
exists e1 s1 x1 x2.(in(e1,x2) & n_pond(x2) & Actor(e1,x1) & v_stand(e1) & n_dog(x1) & a_white(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_sun(x2) & in(e1,x2) & Actor(e1,x1) & v_lay(e1) & n_dog(x1))