A man is drinking a beer.
A boy drinking eating a brownie.
Boy eating brownie totally contradicts with the man drinking a beer.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_drink(e1) & n_beer(x2) & n_man(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_eat(e1) & n_brownie(x4) & (x1 = x3) & n_drinking(x1) & of(x1,x2) & n_boy(x2))