A boy in a robe sits in a chair.
the boy is ill
Just because a boy is sitting in a chair does not mean that he is ill.
exists e1 x1 x2 x3.(in(e1,x3) & n_chair(x3) & Actor(e1,x1) & v_sit(e1) & in(x1,x2) & n_robe(x2) & n_boy(x1))
exists s1 x1.(n_boy(x1) & Theme(s1,x1) & a_ill(s1))