A young girl folds towels.
A young boy smiles.
There can either be a girl or a boy.
exists s1 x1 x2 x3.(a_topic(x1) & n_towel(x1) & of(x1,x3) & n_fold(x3) & of(x1,x2) & n_girl(x2) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1.(Actor(e1,x1) & v_smile(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))