An old man is wearing eyeglass.
The old man cannot see very well.
The old man wearing eyeglasses does not mean he cannot see very well.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_eyeglass(x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists s1 x1.(n_man(x1) & a_old(s1) & Theme(s1,x1) & -exists e1 p1.(exists e2 s2.(r_very(e2) & a_well(s2) & Manner(e2,s2) & Actor(e2,x1) & v_see(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_can(e1)))