A man with glasses is at the dentist.
A man is at the dentist.
A man wearing glasses is still a man.
exists p1 x1 x2 x3.(n_dentist(x3) & at(x1,x3) & with(x1,x2) & n_glass(x2) & n_man(x1))
exists p1 x1 x2.(n_dentist(x2) & at(x1,x2) & n_man(x1))