A happy child smiles as he plays.
A sad child is crying as he eats.
You can not be happy and smiling as well as sad and crying.
exists e1 p1 s1 x1.(exists e2.(Actor(e2,x1) & v_play(e2)) & n_male(x1) & as(e1,p1) & Actor(e1,x1) & v_smile(e1) & n_child(x1) & a_happy(s1) & Theme(s1,x1))
exists e1 p1 s1 x1.(exists e2.(Actor(e2,x1) & v_eat(e2)) & n_male(x1) & as(e1,p1) & Actor(e1,x1) & v_cry(e1) & n_child(x1) & a_sad(s1) & Theme(s1,x1))