A young man with glasses is holding a small girl.
a man is sitting on a small child
one can not be holding something and sitting on it simultaneously.
exists e1 s1 s2 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_hold(e1) & n_girl(x3) & a_small(s2) & Theme(s2,x3) & with(x1,x2) & n_glass(x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(on(e1,x2) & n_child(x2) & a_small(s1) & Theme(s1,x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))