The white duck is swimming with a black dog
A duck and a dog are taking a nap.
A duck and a dog cannot be swimming and taking a nap simultaneously.
exists e1 s1 s2 x1 x2.(n_duck(x1) & a_white(s1) & Theme(s1,x1) & with(e1,x2) & n_dog(x2) & a_black(s2) & Theme(s2,x2) & Actor(e1,x1) & v_swim(e1))
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_take(e1) & n_nap(x4) & subset_of(x3,x1) & n_dog(x3) & subset_of(x2,x1) & n_duck(x2))