A little girl laughing at ducks.
a boy pouting
You can either be a by or girl. Not both
exists e1 s1 x1 x2 x3.(a_topic(x1) & at(e1,x3) & n_duck(x3) & Actor(e1,x2) & v_laugh(e1) & (x1 = x2) & n_girl(x1) & a_little(s1) & Theme(s1,x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_pout(e1) & (x1 = x2) & n_boy(x1))